I try to create a world with a pack I have bought however it just logs me off and takes me to the Xbox home

Hey there!

This bug should be reported under the console edition section instead of the java edition section. Also I'd recommend reading through the bug tracker guidelines (https://help.minecraft.net/hc/en-us/articles/360049840492-Mojang-Bug-Tracker-Guidelines) as your report follows the incorrect format.

This is the project tracker for Minecraft Java Edition. For Bedrock Edition on Xbox, please go to https://bugs.mojang.com/projects/MCPE/summary.