So overall there is no exact number value for "Walking" and only Jet, Fire, Crouch, Jump, ClearGhostBrick, and Light have number values.
You're throwing two completely different things into one category
Triggers (left hand, right hand, jump, crouch, and jet) are handled by the engine, with a script callback (::onTrigger). Other core functions such as WASD movement and walking are handled similarly, but I believe without the script callback, meaning that
scripts can not directly access what is happening in regards to these functionsAll other keybinds, including clearbrick and light are handled through binds that call script functions, mostly serverCmds. They don't have a "number value"
Tell us exactly what you're hoping to accomplish with this, and we may be able to provide you something