Yes, it is a sport. Yes you do get scored. At competitions they score u on how clean and how hard and how well you execute everything. It is very, very hard. Anyone outside of cheerleading really doesn't fucking understand it. You get hurt A LOT and you have to condition like you are in boot camp. I've been there and trust me, our first month conditioning is just as hard. It's really fun and you have to have more than half a brain to do it. Most cheerleading programs require you to have a 3.0 GPA or higher. Although cheerleading DOES give you a great body, it definitley does not turn you into a slut.
Cheerleading is the hardest sport over anything in the olympics or anything else. And, yes, it is a sport.