See this TurboTax support FAQ for the verification code - https://ttlc.intuit.com/turbotax-support/en-us/help-article/security-risk/trouble-filing-verificatio...
Or if you are being asked for an email address - https://ttlc.intuit.com/turbotax-support/en-us/help-article/electronic-filing/asked-email-checkout/L...
