Fraud Purchase on my Apple ID account

Hello, Kindly I need your support, as I found out today that a payment of 384.99 AED has been made on my apple account of which I did not request for!!

I was trying to figure out from the history what was this purchase, and found out it was an app that was downloaded fo free trial, and I did not request any subscription to... can I know please what to do in this case?!!