You'll need to consult your owner's manual to find the correct fuse number and location. The fuse box is typically located under the hood or in the dashboard, often near the steering column. The owner's manual will have a diagram showing the fuse box layout and what each fuse controls.
If the fuse is blown, replace it with one of the same amperage rating. If the new fuse blows immediately after replacement, there's a short circuit somewhere in the washer pump system that needs to be investigated by a mechanic.
