In sports betting, a "match handicap" line is one in which you are either getting or receiving goals.
For instance - let's say that Real Madrid is playing Las Palmas at home. As you can probably guess, Real Madrid would be a massive favourite to win in this instance.
A match handicap line, however, can make things much more interesting. For instance, a match handicap line might look like this:
Real Madrid, -3 goals, -150
In this line, you are taking Real Madrid, MINUS three goals. So, if you bet $150 on this line and Real Madrid won by a 4-0 score, you would win. If Real Madrid ended up winning 2-1, you would lose.
On the other hand, a Las Palmas match handicap line might look like this:
Las Palmas, +3 goals, +350
In this instance, you would be taking Las Palmas PLUS the three goals. So, if Las Palmas loses 2-0, you would still win, as you have received a three goal cushion.