Enchantments that go above level 10 show as follows: <enchantment>.enchantment.level.<any level above 10>

I tried {{/give @s netherite_axe{display:

{Name:"\"Living and Undead Slayer\""}

,Enchantments:[

{id:sharpness,lvl:255}

; [

{id:smite,lvl:255}

]} 1}} and it just came out like this (see picture at the bottom, and I had to use the Minecraft Wiki's Inventory template to do this)