Is there a way to catch Game end event so that I can reward players some score based on Resources that they carry?
Well, when game ends, all the devices seem to disable really quickly, so I guess what you could do is disable the default end game condition and make your own so you can delay the end game while you reward your players 
Maybe there’s a better way though
My first thought is to control when the game ends instead of hoping to be able to catch when it ends. Just before it ends, do your thing, then end the round? Make it a one round game?