If you received an account verification email in error, it's likely that another user accidentally entered your email while trying to recover their own email account. If you didn't initiate the request, you don't need to take any further action. You can simply disregard the verification email, and the account won't be verified.
If you accidentally clicked the link to verify the account, you may decide to continue to use or delete this account. Either way, to sign in, you'll first need to reset the password.