1600 credits
No, the Xbox version of Minecraft is for Xbox360
Yes. It's the only way you can get it. I believe you need to have Xbox Live to buy it, because you can not get Minecraft as a retail version, so yes I believe you do need Xbox Live to get Minecraft.
no
No.
To get Minecraft for free, you need to download it on Xbox.
no.
An Xbox 360, and enough points to buy it on the store.
No, you do not need xbox live you only need the points to play minecraft (1600-$20)
NO
there are no mods for minecraft on xbox
Yes, the Xbox One is backward compatible with many Xbox 360 games, including Minecraft. However, you need to have the Xbox 360 disc version of Minecraft to play it on the Xbox One. Once the disc is inserted, the game should install and allow you to play, assuming it's one of the supported titles. If you encounter any issues, ensure that your Xbox One is updated to the latest system software.
yes you need to download it from your computer