Before you are ready to go live with your website you will need to activate payments to be able to receive payments from clients.
This can also be done by the main (owner) account, since it includes sensitive information. You will need a bank account, which can be personal or business.
From your dashboard (shopify main page), click settings, and inside settings click payments.
Once shopify payments is ready you can continue (scroll down) and also add
Paypal, Amazon Pay.
Choosing a selection results in a full page refresh.