I really want to know how to toggel hacks on/off

I know already how I make godmode, killaura and speed
but i dont know how I can toggel it on or off or change the value of speed from 75 up to 125
(I want to know how I can make godmode on a keybind or change with a keybind the value from speed)

I hope anyone can help me
happy new year