A lot of people saying the same thing but the point is, it makes no difference if you are running macOS 12.xx or 15.xx the mouse and trackpad do not work. I know this because I have used this hardware with Monterey, Ventura and Sequoia, the result is identical.
There is no provision in the Apple settings menu to setup secondary functions such as swipe and scroll for the mouse and there are no settings whatsoever for Trackpad in Ventura or Sequoia.
You all need to return the hardware, then and only then will Apple act on this issue. As long as you pay for it and keep it, there is no come back on Apple, they just make money on something that does do what it says on the box. You may as well be pushing a river stone across your desk.