I did my w-2 last night and the next morning my mom asked me if I had answered that I could be claimed as a dependent by someone else and I didn’t. That was the wrong answer, I didn’t reall

TurboTax will let you send an amended return.   I've never done it.  But if you bring up the TurboTax application, the opening page has a button that lets you begin the process of filing an amended return.