My nail broke and afterward I had pus and a little dried blood, it hurts a lot but I don't know what to do?

Based on the information provided, it sounds like you may have a nail infection. It is important to clean the affected area with a saline solution and apply an antibiotic ointment to the broken part of the nail. It would be wise to visit a pharmacy to have a healthcare professional assess the situation and recommend the best course of action to treat the infection. They can provide guidance on the appropriate products to use. Without seeing the nail, it can be difficult to determine the severity of the infection.