If you haven't set up a payment method yet, you can do so by going to > [Your Name] > Payment & Shipping > Add Payment Method . This allows you to link a credit card, debit card, or PayPal account to your Apple ID.
The app icon will appear on your Home Screen or in your App Library with a progress circle. Once the circle completes, the app is ready to use. Adding a Payment Method how to buy apps on iphone x
Tap the Search tab (magnifying glass) at the bottom right to type in a specific app name. If you haven't set up a payment method