If you didn't save the pdf files and have the data files ending in .tax2020, .tax2021, etc. you need the same year program to open it. If you can't install the programs you could try the TaxPrinter service to convert a .tax file to pdf at
https://www.taxprinter.com
They might be expensive and it is probably not safe to email tax returns back and forth. They are not related to Turbo Tax. I see it says federal is $44.99 and Federal + state is $79.99.