I checked several different fuse box diagrams for your car and none of them indicated a separate fuse for the washer motor, so I couldn't find it either. However, it may not be as simple as a fuse; there's another thread from a user whose pump wasn't working either and a lot of people jumped in on it with questions and solutions.
In some cases one of the front and rear washers worked while the other one didn't; in those cases it appears the pump is okay, but there were problems in the tubing and/or the control signal (the same pump runs both; it just reverses direction to spray either the front or rear window).
There were lots of suggestions of things to try, so I'd say you should take a look at that thread and see if you can pin down the problem using some of the troubleshooting ideas there.
[post|217491|SOLVED: 2009 Ford Escape windshield washer not spraying? - 2008-2012 Ford Escape - iFixit|new_window=true]
If it was my car, I'd first try listening at the pump with someone turning it on for me to see if it's running or not. If so, check the tubing and the spray nozzle(s) for kinks, blockages, or disconnection. If it's not running, get a voltmeter or test light and see if the motor is getting any power.
Once you have more information, come back and let us know what you found and we'll go from there.