Peel the squash and cut into small cubes - around 1" pieces.
Heat the oil in large skillet over medium heat. Add the garlic and saute for a minute or so. Add in the squash, fish sauce, and soy sauce along with enough of the water to cover the squash. Bring to a boil and allow the squash to steam until it is cooked through and the water has almost evaporated. This will take about 12-15 minutes.
Push the squash to the sides of the pan. Pour the eggs into the center and stir them about rapidly until they're just cooked, about 2 minutes or so. Stir everything together and season with salt and pepper. Serve over steamed rice or rice noodles and enjoy.