How much detail knowledge shall I learn to get a 4 or 5 in AP Euro-Hist?

I’m self-studying AP Euro History now, and the situation is getting tense for me… I have been confused about to what kind of a scale should I know about the details… Should I just remember the names of chief commanders and important events of a war, or should I dig even deeper? Do I have to appreciate many artworks during Renaissance? Those are just examples… If you have taken the test before, could you offer me some suggestions? I would be very appreciated.</p>