A bet on Over 4.5 Goals is a bet that 5 or more goals will be scored during the match. In other words, if a scoreline has five or more goals in it, Over 4.5 goals will win. A winning score could be 3-2, 2-3, 3-3, 5-0, 0-5, 4-1, 1-4, 2-5, etc. Betting odds for Over Under 4.5 Goals.