Hi, you seem to be facing an issue verifying your billing account. To get help to fix this issue, you can try to contact the Billing support team by using the following options [1] or you can use the Billing Assistant [2] for further guidance on the topic.
[1]: https://cloud.google.com/support/billing/#alternative_options_to_contact_support
[2]: https://apps.google.com/supportwidget/helphome?product_name=Cloud%20Platform