error getting the code to verify my account

Hello.

People who had the same problem as you were discussing the issue at the URL below.
After reading the discussion, it seems that the causes vary from person to person.
https://www.reddit.com/r/aws/comments/u297gk/since_2019_i_cannot_create_an_aws_account_i_have/

We recommend that you contact AWS using the URL below.
https://support.aws.amazon.com/#/contacts/aws-account-support/

It seems that you can also contact AWS Support by following the steps in the document below, so please try it.
https://docs.aws.amazon.com/accounts/latest/reference/troubleshooting_create-account.html