Why purchasing final cut doesn't have invoice

reportaproblem.apple.com ←Receipts cannot be reissued, but you can check them by logging in with the ID you used to purchase them.

Go in to your App Store, if you’re signed in, you can access your purchase history.

FYI, of all the apps I’ve purchased via the App Store all these years, I was never emailed an invoice.

You should have received an email receipt. Maybe it’s in junk.