Why do you think the judge didnt ask ponyboy about how bob died?

The judge likely didn't ask Ponyboy about how Bob died because the focus of the trial was on the circumstances surrounding the altercation and the actions of the individuals involved, rather than the specifics of Bob's death. Additionally, bringing up the details of the incident could have been emotionally charged and distracting from the legal proceedings. The judge may have aimed to maintain an objective atmosphere and ensure that the trial remained focused on the relevant facts.