For my modpack I need to config the structes to have quark chests but whenever I try to find the dungeon structures I can't /locate them, also I cant find them in the configuration datapack for this mod. Its like they don't exist

Dungeons are not structures. They are features just like vanilla’s dungeons which are not structures. Thus no locate command. The config datapack has them under the worldgen/configured_feature folder where you can edit what chest they spawn with: https://github.com/TelepathicGrunt/RepurposedStructures/releases/tag/4.0.0

This line you would change when you override the files by datapack:

change it to quark’s blocks. Delete all other files/folders you have not edited and that should work

im assuming you got this to work with my suggestion so I'll close this since there isn't actually a bug with /locate