How do I sell an app on the App Store after publishing or reviewing it?

hello!!

apple community

I need help from you people to purchase apple developer membership. I have created an app. I want to publish my app to testers for review or testing. Or this is my first app project and I want to sell the app on payment to the app store. Please help me regarding how to sell the app after publishing or reviewing the app...

please tell me anyone!!

thank you

[Re-Titled by Moderator]

Original Title: app store