If you have a burst pipe, you must act quickly to minimize damage and prevent further issues. The first step is to shut off the main water valve to stop the water flow and prevent flooding. It's important to immediately contact a professional plumber to repair or replace the damaged pipe to prevent further water damage and ensure the safety of the property. In the meantime, you can try to contain the water by using towels, buckets, or other items to absorb or collect the water and ensure the affected area is well-ventilated to prevent mold and mildew growth.