A scope is the set of identifier bindings that you have access to.

I don't think there is a common name for functions, variables, and objects, because they are somewhat different concepts. Functions are a kind of object and object are are kind of value, but variables are "slots" which may contain values, but are not values themselves.

  So there is a level of indirection between variables and values, which mean you will rarely talk about them as the same thing.

There is no common term (and you don't need one) since they are different categories of things. The quote uses imprecise language:

In JavaScript, scope is the set of variables, objects, and functions you have access to.

Technically this is wrong, since it confuses variables and values, which are distinct concepts. A scope is a set of variables. A variable is a named reference to a value. Objects, functions and primitives are values. So there is a level of indirection between variable and value which mean you cannot lump them together.