Hi! You can get a copy of your prior year returns from the Documents tab. Just make sure you're in the same account you used last year. This article might help.
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/00/27010
You can also get a transcript from the IRS here https://www.irs.gov/individuals/get-transcript
https://ttlc.intuit.com/community/my-tax-return/help/how-do-i-get-a-copy-of-my-tax-return-or-transcript-from-the-irs/00/27020