is your 2019 return complete? then you can print and mail (maybe fees). if not you need TurboTax desktop (full PC or MAC) software to finish and mail. 2019 can't be e-filed.
https://turbotax.intuit.com/personal-taxes/past-years-products
if started online
Sign in and open or continue your return.
Select Tax Tools and then Tools from the left menu.
In the Tools Center pop-up, select Save your 2019 return to your computer (you must be in the account used to prep the 2019 return) .
The file will download
(Optional) Locate the downloaded file and change the default filename to something more recognizable.
