They are a little way to show the progression you have done on the server. They appear by using /profile (playername) or when you join the server next to your points counter.
There are eight badge categories:
Ore Badges (Coal, Iron, Gold, Redstone, Lapis, Emerald, Quartz and Copper) - obtained by mining the most ores (Silk touch doesn't count)
Destruction Badges (1st, 2nd and 3rd) - obtained by destroying the most blocks
Creation Badges (1st, 2nd and 3rd) - obtained by placing the most blocks
Wealth Badges (1st, 2nd and 3rd) - obtained by being the top 3 richest players according to the CFUK Bank
How badges look when someone joins.Dominator Badges : (Zombie, Skeleton, Stray, Zoglin, Creeper, Slime, Warden, Wither Skeleton, Piglin Brute, Silverfish, Blaze, Endermite, Witch, Vindicator, Vex, Pillager, Ghast, Evoker, Drowned, Phantom, Magma Cube, Hoglin, Shulker, Husk, Ravager, Zombie Horse, Skeleton Horse, Nautilus, Zombie Nautilus, Panda, Polar Bear, Llama, Trader Llama, Pufferfish, Guardian, Elder Guardian, Wither, Ender Dragon, Enderman, Bogged, Cave Spider, Spider, Wolf, Fox, Parched, Camel Husk, Goat, Zombie Villager, Zombie Piglin, Piglin and Player) - obtained by killing the most mobs (Dog kills count towards the badge)
Crop Badges (Wheat, Carrot, Potato, Beetroot and Netherwart)- obtained by mining the most crops
Fishing Badges (Pufferfish, Cod, Tropical Fish, Salmon)- obtained by fishing the most
Challenge 100% Badge (Can have multiple owners!)- obtained by 100% the Challenge Server
