After you file

how did you prepare 2021?  if Turbotax you should be able to access the return and print a copy.  or you can go back to the IRS and download form 4506. you pay $43 for each return but you get a copy, not a transcript in the mail, how long will this take? don't know

https://www.irs.gov/pub/irs-pdf/f4506.pdf