When you say "the taxes for 2021 that I filled..." what EXACTLY do you mean? Did you use the online program and enter income information for 2020 instead of entering information for 2021? Did you actually file the return by e-filing it or mailing it? What did you do with the return that you prepared?
The current online software is only for a 2021 return---no other year. So if you entered 2020 information you made a big mistake. We need to know what you did in order to advise you. Did you e-file? Was it accepted? Rejected?