Unfortunately, you can't download Among Us on PS4 and PS5
As Among Us developer the InnerSloth LLC launched it only for Mobile and PC and it has been a success till its launch.
How To Play Among Us on PS4 and PS5?
Among Us is a multi-player game in which a group of 4 to 10 people joins online through a WiFi network
In this game, you are a crew member on a spaceship, airship, sky headquarters, or planet base.
But one crew member is an Alien and here to murder everyone on the ship before they reach earth.
How to Download Among Us on PC?
You can download it through BlueStacks software:1. Download and install BlueStacks on your PC2. Search for Among Us at the top right corner.3. Now install Among Us and then start playing the game on your PC.