I have a iPhone 5c how do I turn HDR off of camera it makes 4 pics of same photo

Just touch the HDR letters at the top of the camera screen. It will turn on and off from there.

HDR should not result in 4 photos on your device anyway. It will take a couple and "merge" them into one. I suspect that you are accidentally taking photos in "burst" mode. This happens if you leave your finger on the shutter button too long. Just a tap is all it needs for a single shot.

There is no button for Burst mode. Touching the shutter button very briefly results in one photo. Touching or holding your finger on the shutter button longer starts Burst mode. Practice a lighter shorter touch of the shutter button.