My .json file wasn't created in the oxide/config directory after i put the .cs file in the plugins folder, not sure why this happens, but because there's no config to edit, I can't put the proper configuration in and my server won't start up.

If the server isn't starting, then the plugin won't be loaded and the configuration file won't be created. You'd need to get your server to fully start before this plugin can do its job.

I got the server started, but the .json file still has yet to be created.

Where are you looking for the file? Did you check your oxide/logs for errors?

Have you verified that Oxide is installed? You can check using the oxide.version command.

I'm looking for the file in oxide/config, in my oxide/logs there's no mention ox QuickSmelt, and when i do oxide.version in my WebRcon utility it says "Oxide.Rust Version: 2.0.4361".

Try to reload the plugin with o.reload QuickSmelt

Merged post

Or probably try to refresh the configuration directory in FTP