Where does the moon get it's light?

It is a reflection off of the sun.

Explanation:

The moon shines because its surface reflects light from the sun. And despite the fact that it sometimes seems to shine very brightly, the moon reflects only between 3 and 12 percent of the sunlight that hits it. The perceived brightness of the moon from Earth depends on where the moon is in its orbit around the planet

The Moon gets its light from the Sun.