Business people like to use the word scope because it specifies the extent of their responsibilities. Once you know the scope of a project, you can decide if you're qualified and how much time it will take to do it.
If your boss gives you a new task and you don't want to do it, tell him or her it's not within the scope of your duties. A scope is also a device used to see something in the distance. You'll find one on shotguns, submarines, radars and the like. You can use scope as a verb meaning "to look out or around." When you and your friends go out, you probably scope out a few places to see where the action is.