Which sharp IR is this? Check the data sheet for the wiring. It is most likely GND, +5V, then the signal (maybe not in that order).
To make the servo go 60 degrees in either direction, you would probably have to "guess and check" or find some way to test for the certain "PWM values" that correspond with the 60 degrees left/right positions. Then you would want to command the servo to move to that position, have some sort of delay to allow the servo to move, then read the sharp IR (if that's what you're using the servo for). If you want it to scan you could use a loop that slowly ramps the PWM value from the left position to the right position.