After you file

You can get your info from the IRS.  Set up an account, then you can print out your info.

 

You can request a transcript from the IRS

https://www.irs.gov/individuals/get-transcript

 

For a fee of $43 you can get a complete federal tax return from the IRS by completing Form 4506

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