After you file

If you used the online product to file your 2018 tax return, use this link to help you access it: https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/00/270...

 

If you used the CD/download product, the only copy of that return would be on your computer.  TurboTax would not have it.