I had a huge water damage accident a few years ago. First thing you need to do is call a water damage company. They will come in suck all the water out and place a bunch of fans to dry up everything. Then I called my home insurance company. They worked with me to replace the wall, base board where water came down from the 2nd floor to the first floor. Pretty much everything that was damaged was replaced. They even repainted the entire interior of my home and replaced all the base boards to match the place where it was damaged. I had to stay in a hotel for 2 months while the remodeling was happening. So the home owner insurance paid for my family to stay at Residence Inn the entire time and even covered the cost of most of our meals from eating out all the time. Check with your home owner insurance to see what they can do. Good luck.