eph221
yes, it's easier in court if you've registered it.
The work is copyrighted as soon as it is rendered in tangible form i. e. recorded to computer memory, some other form of phonorecord or transcribed into some form of notation. The OP is probably confusing copyright with copyright registration, which requires an application and fee plus a deposit of copies of the work with the US Copyright Office. In the US, it is not possible to file an infringement suit unless the work is registered, even though the copyright itself is secured without registration.
The good news is that you can register the work after infringement has occurred and then file suit. If the registration of the work is "timely," that is prior to infringement and within three months of publication, you also secure the right to receive statutory damages, reimbursement of your court costs if you win, and the "prima facie" determination that you are the legitimate author. If you wait until infringement has occurred then you will need to prove actual damages (the provable amount of money you would have received for the work that you lost because of the illegal competition), you will have to prove authorship (as opposed the infringer having to prove you are not), and you will have to pay your legal fees out of your own pocket, win or lose.
https://thecopyrightdetective.com/timely-copyright-registration/