If you navigate to the directory where the 2021 tax return is saved, look for a file name ending with ".tax2021". Look at the icon before the name, if it has a red checkmark it means that the 2021 software is installed on your computer. If the red checkmark is not present unfortunately you will need to reinstall the 2021 TurboTax software.
After you successfully open the ".tax2021" tax return you should be able to print it and save it as a PDF file.