if you used online, you can't get them. If you used desktop, they would be wherever you downloaded them. Whether they'll install is the question. On my w10 machine with the federal and state already installed and last updated when i did the return in 2022, the file wouldn't open because the update server was no longer available.
I agree with you that it is bull that TurboTax says nothing about this. On the first screen, when you install it, you should see a warning that says this year's app will no longer be functional after xx/xx/20xx.
something like this should be available for online users.
there is an online service, NOT AFFILIATED WITH TURBOTAX, that you can email most tax files to, and for a fee they will e-mail you a PDF of the return.
Because of this limitation, I strongly recommend that desktop users save a PDF of the return on their computer and a second copy somewhere else. You'd be surprised how many desktop users have their box go bad making the file and PDF unrecoverable
