My boyfriend sent me money through Apple Pay and it won’t transfer to my bank.

Hi

It may help to follow the steps in the article linked below, including under "Get help":

Transfer money from Apple Pay Cash to your bank account - Apple Support

Once a bank transfer has been started, Apple advises that the process typically takes from one to three business days.

If you need further help with setting up your bank account or if the bank transfer has been started, but has not completed after that time, then contact Apple Support via the link in the article.

I'm afraid that no-one here can look into the issue for you. You are not talking to Apple here - this is a user-based technical support community.