Help with buttons on a wall

Hello so I want to learn and practice and I hope someone can help in this so here it goes I want to know how I can make a wall that have holes in it and those holes will be filled with buttons inside of them red and blue lights that will spawn randomly based on a beat and it will have a scoring system as each time a player hit it correctly it will count for the player that he hit the light oh also this is in VR as both hands will have red and blue hands to match the lights that he will hit