2020 is no longer supported by Turbotax. Updates are no longer available. so you likely won't be able to use it
I'll bet that after reinstalling, there was no option to enter your license code to activate it.
it would seem your options at this point are to take your tax documents to a pro that can still prepare your 2020 return, do it yourself, or, if it is finished, send the .tax2020 file to this site. it is not affiliated with Turbotax. Read what is posted on the site
https://www.taxprinter.com/
