First accident(my wife) -procedure

Hi, so here’s my wife (with daughter 8 months) drove my car in a one-way street and 30’s zone when a guy was hanging out and honking all the time. In a bend the spade wanted to overtake, and then it came to the accident. The guy got out and started screaming and mumbling. Pointing his finger at my wife and “you’re to blame, you’re to blame” “swoke at allah” and so a young guy who saw this came to my wife and pretended to be a bitch. The police were called, and the accident victim kept piling around… .. Anyway, the fact he’s almost nothing to see… could get it away with polish. But this guy didn’t deserve it any other way, yelling around, meien woman asked him to be quieter because the little one screamed, but he got louder. Damage: rear door lower part light scratches plus on the wheel box also small scratches. The police were there and by the witness is 100% confirmed that he’s guilty. . Have his name and verse no. Question; how do I proceed ? do I have to report my insurance ? or is it enough to drive to the workshop or to prepare KÜS expert reports and to send his insurance ? Thanks already once greeting