I don't see anything about a slogan that Apple ever (officially) used, with "Apple makes it happen!"
There's also no registration or copyright mark on that text, as you could expect on something that Apple made for distribution/sale to the public.
I would say that the cup is real enough, and judging by the various icons, maybe from the late 80's.
Likely something that a local Apple dealer made as a trinket to sell in the shop.
And, probably not something that an Apple collector might be interested in.