Apple TV+ on 360 box?

Apple do not make it easy to set up a account without an Apple device, but I manged to do it, and unfortunately just missed out on the £2.99 a month offer, so as there are only about 4 new series I want to watch on Apple TV+ I'm thinking about taking out the weeks trial and cancelling it...

Does anyone know if all of the content on Apple is available if I subscribe through the 360 box, and just for a week, and if it's easy to cancel?

Ideally, I would have liked to subscribe for a month and pay with an Apple gift card, but I can't find a way to do this without an Apple device.

 

[Mod - title edited for clarity]