How to find Apple Card number on iPhone 13

There are many places where Apple Pay can be used. There are also many places where Apple Pay cannot be used, just as is true for any payment method.

Learn where to use Apple Pay - Apple Support

This seems like where your question headed, although it’s a far journey to this spot from your original post.

What did you see when you followed these instructions in the Related Article at the top of this page, the part that says:

1. Open the Wallet app and tap Apple Card.
2. Tap the card number icon , then authenticate with Face ID, Touch ID, or your passcode.
3. Next to Card Number, you can see your virtual card number.

EricaLynh wrote:

I have Apply Pay, not the Mastercard

But your original post says “How to find Apple Card number…”. So does your post’s title. There is a huge difference between Apple Card (the Master Card) and Apple Cash.

For Apple Cash, you may tap the three dots in the circle in the upper right, and see the last four digits of the Device Account Number.

EricaLynh wrote:

You right! I called support and found the answer. There isn’t a number to the card. Somewhere online information for Apple Pay should say that and clarify that you can’t use Apple Pay in certain situations because there are certain instances where you absolutely cannot use Apple Pay…but I’m still an avid Apple customer forever!!🤩

You're confusing Apple Pay, which is a way to use registered credit cards from your phone with any merchant that supports contactless payments, with Apple Cash, which is used primarily to send money to other Apple device owners using iMessage.

Read and follow the article linked above.