from raw data to degrees
The output of a gyro is a rate (rad/sec or degrees/sec) - you can't get just "degrees".
According to the spec, the device has a sensitivity of 6mV per degree per second.
The zero degrees per second point is halfway up the scale at 2.5V.
So, if your gyro is attached to an analogue pin, and the analogue reference is set to 5V, if the gyro isn't rotating, you should get a reading around 512.
Since your minimum sensitivity of the Arduino' analogue pins is about 4.9mV, you'll get just over one count per degree per second.
Post your code and your circuit if you don't get these sorts of values.