How to make Call Of Duty like score pop up

So i want to make score pop up like in call of duty (pop up near crosshair that tells you how many score did you get from that kill) and i was trying to replicate it but it was either on widget that shows on screen than animation happen how that score is getting up and fading out i want to make it where when score is popped up on screen if player kills another enemy it updates the score on widget with animation and the pop up than stays longer until it disappear