What year am I expected to die? Born in 2002,and am female

Well, you are too young to think about this problem.
In 2015, there is no serious problem about your health. If you still worry about, you can take more exercises, such as swimming and running. In this way, you can avoid some little illness.
In this year, pay attention on your study. You need to try your best to learn knowledge and then will harvest a lot. :-)