What is 4 sixes worth in cribbage?

In cribbage, four sixes are worth 12 points. Each six contributes to pairs, with each pair worth 2 points, totaling 6 points for the three pairs formed (6-6, 6-6, and 6-6). Additionally, there are two sets of three-of-a-kinds, which score 6 points each, adding another 12 points. Therefore, the total score for four sixes is 12 points from pairs and 6 points from three-of-a-kinds, making it 12 points in total due to scoring rules.