Why is my Apple Pay card number different from Revolut card?
The last 4 digits you see for Apple Pay transactions on your statement are not the real last 4 digits of your card, but an encrypted number generated only for that transaction due to security purposes. This is a security feature developed by Apple, and Revolut can't change it. If hackers breach a payment terminal/database and get your credit card number, they would just get the one-time dynamic security code, which would be useless to them.
You can learn more about this feature from Apple here. If you face any problems due to this feature, please contact Apple support.