how do I edit my billing address?

Log into your account in the App Store/iTunes and you should be able to change/verify it there. Or you can click the blue Edit payment methods in the article below. When signed in and the page loads, you will be on the credit card page. After updating that, click the Go Back button at the lower left and you will be on the address page. If you have a subscription, you need to add the new card, and then promote it to the primary payment method before you can remove the old card.

Apple ID payment information - change.  

Is the billing address correct on the Apple card?

Apple Card account - Manage 

The billing address on my apple account is from an old business account. It is not the billing address tied to my cc.

See my previous posts.

I need to edit my billing address

Did you read this link?

Apple Card account - Manage

I have the same problem. I see an old address that is no longer valid, and there doesn't seem to be a way to change it and it's really frustrating.