Thanks to vdd and my sister I found the solution. Thank you and goodbye :3
 

Hello, using a send bus with the desired effect at your rec track will do the trick.

Ok! Can you tell me how I do that,and can i do it with my Scarlett 2i2, or will there be latency?

OK, I use a Scarlett Solo, so it just work for you, as well. I describe an easy variation. It is not the most elegant way, but it works just fine and should be easy to follow.
Mixer Page:
1. Add two send busses
2. Insert the reverb to the first send bus (100% wet signal - do that within the plugin)
3. Mute the other send bus (yellow button)
4. Add a send from your recording track to the reverb bus
On your recording track:
5. Change the output of the rec track to the second bus (the muted one)
6. Activate the input echo at that track (the blue icon)
At your Scarlett:
7. Use the direct monitoring function at the interface.
 
Now you can hear the input signal without any latency and the reverb signal with a small latency. That is not a problem, because its in the nature of a reverb to have an amount of delay time. If it is to much, you can decrease that variable at your reverb plugin a little bit.

Here's another way.

Create a track go record the vocal on. Insert a pre-fader (pre fader, not the usual pot-fader, that's important) send to an aux channel.

Enable input echo on the track, and set the track fader all the way down so the incoming audio doesn't get sent to the master and back out to the interface. The pre-fader send will ignore the track fader's position because it's outputting before that point. If you put a 100% wet reverb in the aux channel you can then use the track send to route audio to the aux channel, so the reverb will be sent to the master and back out to the interface for monitoring.

The catch is that to hear the mix in context once recorded you either have to turn down the pre-fader send and have another post-fader "normal" send also pointed at an aux channel with a 100% wet reverb. Or just create two tracks, one with the send pre-fader, volume all the way off and input echo enabled and another with a post-fader send pointed at an aux channel with reverb plugin, the aux channel muted and and input echo not enabled on the track. Arm the second vocal track for recording and record to it while monitoring through the first track.

I hope that makes sense.

You might also find that a simple, single, ordinary track with input echo armed and a reverb aux alone can do the trick if the system latency is low enough, just don't monitor the vocal itself through the interface directly and Sonar at the same time. A latency of around 10ms or under is generally fine for most people. Sound travels about one foot in a millisecond, so 6 to 8ms latency is no worse than the delay between singing and hearing the sound from live stage foldback/monitoring systems and most singers can cope with that.

OK so I'm trying to understand so it sounds like I should:

Make a recording track
Insert a send/ Make an aux track(pre-fader)
Put 100% wet reverb on it
Turn the volume knob on my recording track down 100%

And then what? Sorry but it just wasn't that simple for me to get, I'm new to Sonar Platinum after being on Sonar LE and audacity. A friend suggested I do this so that way I'll be a bit happier recording

Just do the seven steps. That's not as elegant as the solution tlw suggested, but it should work.

That's kind of why I asked fir simpler instructions...I don't understand. Maybe if I had screenshots or a video...I would get it better

It's not very complicated. Just jump in without fear :o)
When Vdd asks you to create two send busses, you read in the Help files what that means, and so on...
Anyway, you need to learn the terminology and basic functions to understand the advice you're given.
It's no use starting to copy-paste the manual here on the forum.
 
There are lots of tutorial videos, too, but I know nothing about them. I like to read the instructions.
I can read as slowly as I want, but the videos usually proceed too fast for me :o/

Well thank you, but I guess I just won't be doing it. I clearly said I don't understand so I can't and am not about to jump in when something can go wrong. I'd rather have clarity with explanation, and I know how to make send busses, I know how to route a track, but I'm still lost on what to do after that; this isn't about me not knowing basic terms it's about whenever I ask a simple question I get an overly complex answer that doesn't help and doesn't even give off a helpful vibe. So if I can't get an answer or maybe a simpler explanation then I'll either find more simpler and helpful information elsewhere or just not do it. 
 
I hope you don't think ill of my response, but I am a bit perturbed because I am new at this. I was told if I come to the forums I would receive the help I need to better handle Sonar and its features and how to apply those features, but instead all I get are questions answered with questions or someone says something that has no relevance or is even helpful. 
 
So I think I'll take my chances with internet searches and YouTube since the help I am asking for is not here.
 
Thank you all, and have a nice day. Also please refrain from replying to this, because I don't feel like having a back and forth since I just dismissed this issue.