With TurboTax Online, you can only prepare and file one tax return per account.
To file for another person, you need to start a new return.
Please read this TurboTax FAQ on starting a new return.
https://ttlc.intuit.com/replies/3288574
I cannot not get in to my tax return from last year infact I cannot get signed in
Take a look at the following TurboTax article for some help to get back into your account:
Forgot your TurboTax Online User ID or password?
@Darlene Joseph