Hi Levi,
Unlike it's newer versions, Windows 7 doesn't include a camera app on it. However, some devices has a built-in manufacturer provided webcam utility that you can use. Try using the Start menu and search for "camera" or "webcam" and check if you can find any of those sort. If you can't find any on your device, there are third-party camera application that are available for download online that you can use with your webcam.
Let us know if you need further assistance.