Minecraft bedrock wont install. Stuck at 0 of 0

Sorry, thought that was a reference that it was working fine on other platforms. And just to verify, are you on an Insider system build, or Insider build of Minecraft?

If not, the next thing I'd try is fully removing your profile from the console and re-adding it after a full power
cycle. I haven't found a good solution posted for this issue, though I have seen it posted by a number of other users, so if you don't mind, there are a lot of different things we can try to really get to the root of this.

Hey, I've just found the solution. I've experienced the same and I was so happy. Thanks to a previous situation like this it had the solution but it was told with uncertainty. What you have to do is have your xbox on sleep mode when you turn it off and
make sure its disconnected from the internet while its turned off. Leave the Xbox off over night or for 2 hours. Then turn on your Xbox and sign-in. Connect your xbox back to the internet. Finally, Go to the Microsoft Store and install it. This should work,
I hope it helps you.

Hey I assume that fixed it for you? I tried that to no avail :/

No it didn't do anything to help unfortunately. I've been searching a lot and there's only one case I've found of someone with this issue getting fixed and it seems that it just worked one day for them after they were able to update insider hub. Unfortunately
for me insider hub seems to be having the same problem of being stuck at 0 of 0.

Any luck? Past usage of the Insider builds should affect what you're trying to do. Hope the profile trick did it for you.