In handicap betting, you predict the outcome of a match as either a home win, a draw, or an away win. A handicap spread (expressed as +/- a certain number of goals) is applied to one or both teams. This spread adjusts the actual goal score to determine the betting outcome.
Example: Consider a match between Liverpool and Everton, with Everton receiving a +1 handicap. If the actual final score is Liverpool 1-1 Everton, the handicap is added to Everton's score. Thus, for betting purposes, the result is Liverpool 1-2 Everton. In this scenario, the bet on Everton wins, as they "win" with the applied handicap.