Verification of what? This is a user community forum. No one can know with any certainty what you are doing and referring to. As a guess, are you trying to efile, and it's asking you to verify your email address? If so, see this FAQ
FAQ: What if I'm having trouble with my filing verification code?
https://ttlc.intuit.com/community/security/help/what-if-i-m-having-trouble-with-my-filing-verificati...
If that's not it, then you'll need to describe what you are trying to verify.