You have a burned out head light bulb. Take it to your local repair shop to have it replaced!
There are different light bulbs in the front headlight of your car – the low beam and the high beam. Your car could have a regular light bulb or an HID. If you take your vehicle to your local mechanic, they will quickly be able to figure out which one your vehicle takes. Be sure the casing that your light bulb is in is kept clean so the bulb is working effectively.