I was at a score of 58 because the ball was just going left and right then the ball just went in a diagonal direction. It was only my first try though so I'm going to try again.
Ok, now it's seems right. I got a score of 29 while the ball was going diagonal the whole time so I'm pretty sure that's how it's supposed to work. I've only encountered one bug (I think) and that's when the ball goes beneath you and you may be at the bottom or top of the screen, so it keeps bouncing up and down and your score gets higher and higher and higher fast, but really, I like that, just because I watch the score go higher faster over time. (That may have been a bit confusing, I'm known for explaining thing's that way)
Oh and you might want to make a way to make the buildings in the background not move. The game goes across my whole screen and it gets really laggy.