Apple pay testing requirement in my New ecommerce website testing project

Apple pay testing requirement in my New ecommerce website testing project. I am not familiar with apple pay testing, also not sure where to start. So could you please guide me on it.

1, Do i need to buy a sandbox account for testing the apple pay? How to buy a sandbox account, if possible please share the Url aslo?

2, Is there any payment required to purchase the apple pay sandbox account?