If you received a Form 1099-R for retirement income, the tax data from the 1099-R was required to be entered on the federal tax return, Form 1040 Line 15 or 16, depending on the type of retirement income being reported.
If you received a Form SSA-1099 for Social Security benefits, the tax data from the SSA-1099 was required to be entered on the federal tax return, Form 1040 Line 20.
Look at your 2017 tax return and the worksheets for Form 1099-R and SSA-1099. Do the worksheets exist? If not then you never entered the tax data from those forms.
To access your prior year online tax returns sign onto the TurboTax website with the userID you used to create the account - https://myturbotax.intuit.com/
Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show. Click on the Year and Click on Download/print return (PDF)