Your return copy is not in your Documents.
Save the PDF
https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-pdf/00/26234
For Online…If you already filed you have to be inside your return. You may have to click on Add a State to let you back in.
Select Tax Tools from the left menu
Select Print Center, choose Print, save, or preview this year's return
You can select the option to create a PDF with all the worksheets