For persistent crashing when opening the Global Resources menu, you may need to the game. This does not delete your world data.

Are you seeing a specific like "Resources failed to load previously," or is the menu simply crashing when you open it? Mojira - Issue MCPE-39045 - Mojang - Minecraft

: Go to Settings > Storage within Minecraft. Look for "Cached Data" or specific resource packs and delete them. This often forces the game to redownload and properly apply the packs.

: Hold the Xbox button on the front of your console for 10 seconds until it shuts down. Unplug the power cable for at least 10 seconds, then plug it back in and restart.

: If your packs are listed but not working, go to Global Resources , deactivate them, exit the menu to let the game reload, and then reactivate them.

: Ensure your Xbox has enough free space; full storage can prevent resource packs from downloading or loading correctly.