For the 4-2 score the possible answers are
0-0, 0-1, 0-2,
1-0, 2-0, 3-0, 4-0
4-1, 4-2,
3-1, 3-2,
2-1, 2-2,
1-1, 1-2
For the 3-3 score the possible answers are
3-3, 3-2, 3-1, 3-0
2-3, 2-2, 2-1, 2-0
1-3, 1-2, 1-1, 1-0
0-3, 0-2, 0-1, 0-0
To make sure that we haven't missed any out we put the scores in group order keeping one teams score the same and looking for possible answers for the other team.
If there are 24 possible scores the full time score could be
0-0
1-0, 2-0, 3-0, 4-0, 5-0, 6-0, 7-0, 8-0, 9-0, 10-0, 11-0, 12-0, 13-0, 14-0, 15-0, 16-0, 17-0, 18-0, 19-0, 20-0, 21-0, 22-0, 23-0
we know that we haven't missed any out because there are 24 combanations 23 with 23-0 and the extra 0-0.
We think there are more possibilities but we have run out of time!