M16A4 Auto Fire Script for Logitech G502

I'm totally lost, I can not find anything, can anyone help me? need a script for auto fire while pressing mouse 1.

I only have a Logitech keyboard but I'm guessing it's the same with the mouse. Select the button on your mouse you want to set your bind to and set a new keybind and go to Multi Key. Right click and press Insert Mouse Event>Left Button> Click. Then set the repeat to "While Pressed" and the delay to what you want.