Check your spam folder for your verification email. Many services incorrectly mark our verification email as spam.
Please try to resend your verification email via the VRChat Home. If you misspelled your email address, you can change it at our website as well by logging in with your VRChat account name.
You can only use a verification email once, and it will expire after a while. Resend it if you're getting an error from the VRChat website.