Yes, the Xbox One X can play 3D Blu Ray discs.
Xbox One X is backwards compatible with all Xbox One games and accessories, including Blu-ray discs. However, because the Xbox One X has a more powerful graphics engine, some games may look better or run faster on the new console than they did on previous versions of the Xbox One.
Blu-ray players can play 3D Blu-rays, but some may require an additional piece of equipment to do so. Some 3D Blu-rays include a pair of special glasses that must be worn in order to view the 3D image properly.
Xbox 3D is not compatible with any games.
Yes, Xbox One does have 3D games.
Yes, Xbox One can play burned Blu-ray discs.
Yes, Xbox One can play 4K Blu-ray discs. However, the disc must be in 4K Ultra HD format and the player must have a 4K Ultra HD Blu-ray player update available.
Xbox One discs are not Blu-ray. Xbox One games are stored on a hard drive and can be played on any Xbox One.
At this time, there are no 4K TVs that support 3D.
Yes, a 3D TV is necessary to watch 3D content.