This is just somebody else's mod with the Fabric installer and the other thing required to run it.
So, basically, this mod adds a "Hunter Compass" to the game that allows you to track a set player. The purpose is for gamemodes in, like Dream's famous MC Manhunt, where a player is tracked down by set "hunters." It's a pretty darn vanilla modpack, mainly just serving the purpose to play Dream's minigame.