Hey madisonlayfield,
Your new MacBook Air - congratulations on your purchase, by the way - should come with Photos installed. See this page - Compare Mac Computers - Apple Mac Comparison for specifications.
If you are having difficulties finding the Photos application, you may want to try using Spotlight. See this article for information about how Spotlight can help you find things on your Mac - Mac Basics: Spotlight helps you find what you're looking for.
Normally Photos would be found in your Applications folder. If using Spotlight does not find it for you, please post back and we will see what we need to do to get it installed.
Thanks for using Apple Support Communities.
Happy computing.