You can resend a verification email from this page: https://itch.io/user/settings/email-addresses
Please also take a moment to ensure that you have entered your email address correctly, and fix it if there are any typos.
If you still do not see the email then you may want to ensure that it did not go into your spam folder, and that your account is capable of receiving emails.
If you still are having issues, you can contact our support team via https://itch.io/support and we can message you the verification link through our support system to your email address.