BepInEx 5 contains all configuration files in
All configuration files have
.cfg extension and follow
The main BepInEx configuration is located in
If you don't have the file, run the game with BepInEx at least once and BepInEx with automatically generate the file.
Open the file in any text editor of your choice. All configuration options are documented.
Most plugins have their configuration options in
The configuration files are named by the GUID of the plugin.
Options are usually documented, but that depends on the plugin developer.
It is suggested to download and use BepInEx.ConfigurationManager which provides a simple, in-game UI for editing the plugin configuration.