If you want to make sales from Print Shop or your Image Galleries, you'll need:
1. A PayPal or Stripe account, to receive the money you've earned from your Workspace sales.
These accounts are free and simple to set up, but like all payment processors PayPal and Stripe will require you to validate your personal information.
2. A bank account to receive your profits from PayPal or Stripe.
You'll need to enter your bank details into your PayPal or Stripe account settings so you can withdraw the proceeds of your sales.
There are differences in the ways PayPal and Stripe operate with Workspace, which you can read about here.