Please see the below information to access your other TurboTax account:
At the end I also posted how to have it look you up by SSN.
To
get a list of your User IDs and recover account access, you can use the
tool at the link below. Try using your phone number first. If you try
using your email address, and you have more than 1 email address, you
should run the tool on each one.
NOTE: Before running the
account recovery tool below, log out of all Intuit accounts including
this user forum, or you might end up in a loop. Then clear your
browser Internet cache, close your browser, then reopen it, and go to
the link below. You may wish to copy this link so you can paste it into
the new browser session.
https://myturbotax.intuit.com/account-recovery
If
still no luck after running that on each email address you have, then
run the tool yet again, but this time choose the small blue link that
says "Try something else", and it will look you up by SSN and other parameters.
If you still can't access your account after all that, here's how to phone TurboTax Support when they open in 2 hours.
Use
the form at this link to be assigned a phone number. The number will
not display when they are closed. This time of year they are open
5AM-9PM Pacific (8AM-12 Midnight Eastern.)
https://support.turbotax.intuit.com/contact