Generally, judgments don’t affect your credit score because they don’t appear on your credit report. Only information shown on your credit report is factored into the calculation of credit scores.
If a judgment appears on your credit report by mistake, it might still cause a drop in your score in some credit scoring models. This isn’t something you need to worry about because you can immediately dispute the judgment and get it removed.
However, judgments are public records. Even if they’re not on your credit report, lenders can still see them if they run a full background check on you instead of just checking your credit (which many lenders do). This means that even if a judgment won’t impact your actual credit score, it can affect your finances and loan options in other ways.