Once you get them printed (or created as a PDF file) Look thru it for a sheet labelled "Electronic Postmark - Certification of Electronic Filing" .
That sheet tells you when you E-filed your "Federal" tax return electronically, and when it was accepted.......assuming you did file electronically and not by mail. Of course, filling out your tax forms is not the same as completing them, and then actually filing them. After e-filing them, you always should return to the software a few days later to make sure they were "Accepted" and not Rejected.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
