An idea for the scoring system:
Maybe have 2 points for the correct result, 1 point for correct number of goals per team and 1 point for correct goal difference
Match between teams X and Y
Player A guesses X wins 2-0
Player B guesses X wins 2-1
Player C guesses draw 0-0
Player D guesses draw 1-1
Player E guesses Y wins 1-0
Player F guesses Y wins 4-3
Player G guesses X wins 3-1
Real result X wins 3-1
A gets 3 points (correct result, correct goal difference)
B gets 3 points (correct result, correct number of goals for Y)
C gets 0 points (wrong result, wrong number of goals)
D gets 1 point (correct number of goals for Y)
E gets 1 point (correct number of goals for Y)
F gets 1 point (correct number of goals for X)
G gets 5 points (correct result, correct number of goals for both teams and correct goal difference)
I understand that would result in an automatic 3 points for a draw, but draws are harder to call anyway IMO.
I just think that the fact that amount of goals scored per either team is a really important factor when calling games, as is goal difference.
The system and the amount of points per every right guess can be changed, of course.
Sorry if it's confusing or I messed up how many points each player should get, at one point, I got confused with it myself