How do I find my PRS serial number?

The serial number of a set-neck model is located on the back of the guitars headstock. After the year prefix, the remaining numbers indicate the sequential order of that year. The serial number is located on the neck plate on the back of the guitar.

Is Cort better than fender?

The Fender is the better bargain compared to the in-store price, but the Cort is (to me at least) a way better guitar.