How can I update my email on file if I do not remember my account password

[DaraLO]

You can use our account recovery process to regain access to your account. 

The following TurboTax FAQ can walk you through accessing your account if you've forgotten your UserID or password, or if you no longer have access to the email address or phone number linked to your account.  https://ttlc.intuit.com/replies/3300098