The MinIMU-9 V5 gives you three “numbers”, or readings, for each axis: rotation rate, acceleration and magnetic field.
If you want yaw, pitch and roll angles you will need to use AHRS software. You can use the Pololu-supplied software https://github.com/pololu/minimu-9-ahrs-arduino, or consider using RTImulib, as I described in this post: State of the art AHRS for $25