You have 10 minutes to enter the verification code from the moment you receive it by email. If it expires, request a new one from the verification screen using the resend code option.
You have 10 minutes to enter the verification code from the moment you receive it by email.
What should I do if I do not enter the code within that time?
If the code expires, you can request a new one from the verification screen. Just tap the resend code option and you will receive a new email with another code, valid for a further 10 minutes.
Recommendation:
Make sure you have access to your email before starting the registration process. Also check your Spam or Junk folder in case the message has ended up there.