Can someone tell me how long will it take for a hemerrhiod to heal?

Natural healing: The good news is that area has fantastic blood supply and so healing will occur rapidly. Inflammation (red, hot, tender swelling) is the body increasing the blood flow to the injury to bring healing factors to the area and also the veins expand to carry bad stuff away. Dressings are of no value there. Keep stools soft to minimize trauma, avoid straining and let nature take it's course.