For example, a handicap of 0:1 means that a goal is added to the score of the away team.
An example of a handicap 0-1 is when Manchester United plays against Arsenal with a handicap 0-1 given to Arsenal. If one bets on Manchester United, it has to win the match with at least 2 goals for the bet to succeed. If one bet on Arsenal, then Arsenal should win the match with more than one goal or draw.