Skill Builder Payment for customers

Hello.

The FAQ below states that it will be billed along with other AWS services, so I think you will need an AWS account.
https://aws.amazon.com/training/faqs/?nc1=h_ls

The Team subscription charge will appear on the AWS Billing Console, alongside your other AWS Service usage.

I recommend contacting AWS to find out if individual support is possible.
I think you can contact us from the URL below.
https://support.aws.amazon.com/#/contacts/aws-training