Hey guys been a while since i ran a server but i downloaded the gather manager and unzipped it in my Oxide plugins folder, But when i go to oxide config i cant find the Json. file to edit at all.  I have tried turning on and restarting the server still not showing up

Sounds like the plugin either isn't loaded, Oxide isn't installed properly, else the location you are looking is not the right location. Check your oxide/logs for errors and verify that Oxide is indeed installed and loaded.