The dream of visiting a courthouse could symbolize an unconscious fear of being judged by others. The dream may show that they are putting too much importance on what others think of them.
Also, dreaming about a courthouse means that you feel powerless to protect yourself and those you care about in real life. You might have the freedom to fight the injustices you see in your subconscious mind but real life you are too afraid due to underlying circumstances and lack of power.