Not sure if you are on the Online version or the Desktop version, so I will give you instructions for both on how to save your return as a PDF file.

How do I save my 2019 TurboTax Online return as a PDF?

https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-pdf/00/26...

How do I save my return as a PDF in the TurboTax Desktop software for Mac?

https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-return-as-a-pdf-in-the-turbotax-softw...