Apple watch

Some cellular companies are selling the cellular version of the Watch and allowing you to make monthly payments as part of your iPhone's phone bill. You must activate a cellular plan for the watch (usually $10) and if you cancel the watch's plan, you must pay the remaining balance on the watch immediately.

Apple provide's monthly payments on its products in two ways; by having you apply for the Apple card or for a Barclay's credit card. Apple itself does not finance monthly payments.

ASC - Late 2012 Mac mini, macOS 10.15.4; Watch, series 5 GPS/cellular, watchOS 6.2; iPad Air 2, ipadOS 13.4; iPhone 8+, iOS 13.4; TV 4th Gen, tvOS 13.4;  HomePods, audioOS 13.4 and Airport Express w/ Airplay 2

Ask here;

https://getsupport.apple.com