- Dowload UNity Hub installer from https://public-cdn.cloud.unity3d.com/hub/prod/UnityHubSetup.AppImage
- Make it executable
sudo chmod +x UnityHubSetup.AppImage - Run it
./UnityHubSetup.AppImage - Sign In and Configure License
- Install latest version of Unity and any other module you want
You can also follow the instructions from this thread https://askubuntu.com/questions/1077816/how-to-install-unity3d-on-ubuntu-18-04