https://www.gamespot.com/articles/fortnite-battle-royale-android-now-available-witho/1100-6462461/

Fortnite: Battle Royale is at long last now available on Android without the need for an invite. The beta had previously been invite-only, but as of today you can download it to any Android device for free, without waiting. Unlike most Android games, Epic isn't offering Fortnite through the Google Play store, but instead on its official site. Here's how to download it.

Epic accompanied the announcement with recommended system specs for your Android device to get the optimal experience. You can check the list of supported devices to make sure yours fits the bill.