Apple Pay is a mobile payment and digital wallet service provided by Apple Inc. that allows you to make payments and purchases using your iPhone, iPad, or Apple Watch.
When you use Apple Pay, your credit card is linked to your Apple Pay account and is used to make payments. You can add your credit card to Apple Pay by entering the card information into the Wallet app on your device. Once the card is added, you can use it to make purchases at participating merchants and in participating apps.
Apple Pay does not charge a fee to use the service, and there are no monthly fees or other recurring charges. Instead, Apple makes money by charging merchants a small percentage of each transaction as a processing fee. This fee is usually passed on to the consumer in the form of higher prices, just as with traditional credit card transactions.
Apple Pay is available in many countries around the world, and the specific features and availability may vary depending on your location. You can learn more about Apple Pay by visiting the Apple website or by contacting Apple support for more information.
Use Apple Pay for contactless payments on iPhone - Apple Support