Get your taxes done using TurboTax

I have my 2020 tax file, and a pdf file. But Turbotax wants me to re-enter my license key from 2020 (the program is still installed and was never uninstalled), and I can't find my software that I installed it with. I am wondering if there are any files that turbotax saves on its installation that contain the key I could retrieve it from to re-enter it or if there is another way to get it.