Base models have a small single light. If so, use a popsicle stick to push light back, free catch, lift out. Twist off lense, remove bulb. Try the other side bulb in the one that is not working. If it works, replace bulb.
If it is the raised light assembly, with a more square light, arc amber reflector, red rear reflector, you have to remove the wheel, remove 5 fasteners, remove the raised cover, replace the LED.
There are two different fenders - it helps to know which, or, a picture !
both would be out if it were the fuse.