This appears to be a superficial abrasion and bruising after a fall. The wound does not look very deep but needs proper cleaning and dressing to prevent infection. Rib pain is likely due to muscle contusion, but fracture should be ruled out if pain is not severe.
Next Steps
Clean the wound thoroughly with clean water/antiseptic, apply antibiotic ointment, and keep it covered with a sterile dressing. Take pain relief if needed. Get a tetanus shot if not taken in the last 1 year. If rib pain is significant, breathing is painful, or swelling increases, get an X-ray.
Health Tips
Increasing redness, pus, fever, severe swelling, or difficulty breathing → consult a doctor immediately.