Close the main water valve if you can reach it safely, and call about the wet rooms without stepping into standing water. EPA advises shutting water valves when pipes burst and warns against thawing frozen pipes with a torch.
Keep away from sagging ceilings and wet fixtures. CDC recommends an electrician's inspection before restoring power after water has affected the electrical system. Do not touch a wet appliance or reach a breaker panel through water.
If the pipe is still frozen, leave heating and repair decisions to a plumber. Use a battery flashlight to see from a dry doorway. Photos can wait until the room is safe to enter; a damage report does not require entering a hazardous area.