It is possible that you may have used another account in the previous year to file your tax return. If you think that is a possibility, you can use this link https://myturbotax.intuit.com/account-recovery/ to recover your account with your
phone number. If that doesn't work there is a small blue link at the bottom
that says Try something else and if you click on that you can locate
your account by using your SSN, name, and birthdate.
If you still can't access your account,
you can contact TurboTax Support for assistance by following this link https://ttlc.intuit.com/replies/3300041
You
can follow the instructions in the following TurboTax FAQ to find your AGI from
last year.
https://ttlc.intuit.com/replies/3301618
Then
proceed to follow the instructions in the following TurboTax FAQ to find
out where to put your previous year's AGI on your current year tax
return.
https://ttlc.intuit.com/replies/4168567