Matchplay- you win lose or draw each hole, ie 3 up.means your team has won 3 more holes than the opposition
If you're 5 holes up with only 4 holes to play for example you win the match, thats called winning 5 and 4 and get a point, you can win 1 up, 2 and 1 etc . Tied games get 1/2 point...