This video shows you how to play Fortnite on a Chromebook. Fortnite is not available in the Play Store, so downloading and installing Fortnite on Chromebooks may not work. So, you should try playing the game via GeForce Now, a cloud-based gaming platform. Note that if it is a school Chromebook, there may be firewalls in place to prevent you from playing Fortnite or any other games on the device, in that case, you can use a proxy or VPN service to bypass the restrictions.
GeForce Now: www.nvidia.com...