To get a refund on an app from App Store, follow the steps given below:
- Enter your Apple ID to log in at reportaproblem.apple.com
- Choose the option ‘I'd like to’
- Choose ‘Request a refund’ after that
- Once you have chosen the reason for your refund, click Next
- Select the app, its subscription, and any extra login details
- Now just click the Submit button and your request gets queued up.