I am going to take Math 2 and Physics, but I am good at World History too. Will I have any advantages while applying for my dream university, if I take World History test? I am going to take Engineering Degree
Unless you are applying to a school that requires 3 tests, no advantage. Being able to choose your scores could be helpful in some cases, but I am guessing that someone planning to do an engineering degree would be unlikely to choose the history one.