Someone used my Apple Pay

Here is information I found on this Support page: Legal - Data & Privacy - Apple

In addition, may I please repeat the good advice from Muguy - Change your passwords … especially anywhere where you use the same password as Apple Pay.

Apple Card Support

If you have questions about Apple Card, you can contact support through your Wallet app by initiating Messages. Apple will use any information you share, including personal information, to process your request. If your inquiry must be sent to Goldman Sachs for servicing, Apple will share information about you and your inquiry with Goldman Sachs so that they may better help you. Apple will not retain any personally identifiable financial information that it sends to Goldman Sachs for servicing. You can also contact support directly with questions by calling 877-255-5923.

Chaejung wrote:

Is there any way that I can prove I did not use so I can ask card company to dispute

You would have to discuss that with Apple and with your credit card provider. Not with us. We don’t work for and cannot represent Apple, or your financial provider.

As that reported disputed purchase might then involve a compromised passcode or password compromise, here is how to address those:

… Set a passcode on iPhone - Apple Support

… If you think your Apple ID has been compromised - Apple Support

Chaejung wrote:

I contact with my card company but they said it used from apply pay, I need to talk to apple pay

See the support link here: Apple Pay - Official Apple Support

Chaejung wrote:

Which is best contact number

Use the support link here: Apple Pay - Official Apple Support

We are just other end users here and do not have access to your account. Please contact Support directly. You can start by selecting Get Support at the top of the page.

You'll need to dispute that with your card issuer.

Not sure what the scam was that you fell for, but you should change your passwords on all of your accounts.