Craig,
I had the same problem. It is not a difficult job, although a little fiddly. I got the part from Jap Euro car parts. I can’t remember the part number but it looks like the attached. For fitting I found you tube Rav 5 videos good to show you what to do. The design and layout is the same.
Basically - remove from RHS wheel, remove the plastic covering that separates this area from the engine area, and you’ll see the washer fluid tank with the two pumps - one for front, one for rear at the bottom. They are held in with washer so can be pulled off. To check it is the pump and not the fuse. Swap the rear (working) pump and plug it into the front socket. If it works the pump is the problem. If it doesn’t, then you’ll need to look at the electrics.
Hope that helps