Dreaming about a referee signifies level ground objectivity rather than subjectivity, collective judgement and speed up social conflict resolutions since a referee has no allegiances in the situation involved. They will be able to demonstrate calm and measured judgment to settle a dispute between two or more persons or individuals.
In sports analogy related to the dream’s meaning, then someone in a referee uniform is used to metaphorically represent a neutral figure who is impartial and fair in dishing out play rulings and fouls.