Go to this IRS website for free federal tax return transcripts - 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 - http://www.irs.gov/pub/irs-pdf/f4506.pdf
If the TurboTax online editions were used for the 2020 tax return you would need the User ID and password that was used for the 2020 TurboTax online account.
To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/
Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show. Click on the Year and Click on Download/print return (PDF)
If you do not have the TurboTax account User ID and password then you will have to contact TurboTax support and follow any procedures they require for you to access the tax return.
Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/
