Hi Karen, here are a few methods if the door is metal, many that are not stainless are still made of metal. Hopefully one of them works. https://www.hunker.com/13409795/how-to-fix-a-dented-refrigerator-door
If the door is plastic however, you may just need to order a new door.
Use a plunger
Go to the auto store and get a dent puller.
try using a plunger; it works on small dents on a car so it just might work on ur fridge