4-player Chess question

I've played it a bit, but I want a clarification on how the points are calculated. I haven't seen this scenario to occur yet.

I know that checkmate is 20 points. But which player gets points in this scenario?

This is based for the order here, which is Red-Blue-Yellow-Green

Red gives a check to Yellow. Following that move, Yellow would have one king move available to move out of the check. However, Blue makes a move to block that square while not giving a check. Therefore, Yellow is in checkmate. So which player gets 20 points, red or blue?

I want to know the same thing. I could have done that (blocked squares like blue in your example) in a game today but I didn't because I was scared that the player who played the check would get points for the checkmate.

The player that makes the move resulting in checkmate gets the points. In this case, blue gets the points.