data/bdb/loot_table/LICENSEC:\Users\<username>\AppData\Roaming\.minecraft\saves\<your_world_folder> in windows.datapacks and put the datapack you downloaded it their.Their is two ways to get it:
/reload to get the book which allows you to access the menu on right clicking. (the book was added in version 3.3 and above (older versions will just show the menu))./function bdb:show_menu which will show the menu directly.In settings you have:
This menu allows you to control the scale and some other block display related stuff.
Enter your world, write this command: /function bdb:uninstall, leave the world and delete the datapack from your world folder.
/reload.