Hello everybody 
I am trying to make a collision disable after a period of time or level.
Any help would be appreciated
You could temporary set it as isTrigger = true, which ignores physics engine properties, while giving you functionality like OnTrigger(Enter/Stay/Exit)
Also, note Unity has extensive documentation of its component. In the UI of Unity each component as a blue book, which is a reference, please refer to it next time before asking a question.