Here's some info on Transferring a Prior Year Return to help you if you're using TurboTax Desktop. You can BROWSE to where your .tax2023 file is located on your computer, but if the file is in a cloud account, move it to your C drive.
In TurboTax Online, if you Sign In using the same credentials as last year, you should see a Prior Year Summary. If it isn't there, it might be in a different account. Go here to find all of your accounts.
Here's how to Contact TurboTax Support.
@MASachs