After a crash, your safety comes first. Move to a safe spot and call 911...

https://fast-wiki.win/index.php/What_Should_I_Say_to_the_Other_Driver_After_an_Accident%3F_(And_What_to_Keep_Quiet_About)

After a crash, your safety comes first. Move to a safe spot and call 911 immediately to ensure you get a police report. See a doctor right away, even if you feel fine. Take photos of the damage and collect contact info from witnesses