How do I make PayPal test payments?

Question

PayPal

Hello!
I'm trying to connect PayPal to WooCommerce. More precisely, everything has already been connected, the account is confirmed in PayPal. Now there is a need to make test payments.
I created a test account for making test payments on https://developer.paypal.com , but I don't understand the testing mechanism. What to do with test accounts and how to make test payments?
Please tell me step by step or skinte links where and what to read!
Thank you in advance!