It's sending my filing code to en email I can no longer access.. how do I change this?

See this TurboTax support FAQ for the verification code - https://ttlc.intuit.com/turbotax-support/en-us/help-article/security-risk/trouble-filing-verification-code/L6X76gZlE_US_en_US?uid=m68gd7a8

Follow these steps to update your email address:

1. Sign in to your Intuit account.
2. Select Sign in & security.
3. Select Email address.
4. Enter your new email address, confirm it and select Save.

How do I change my TurboTax email address?