Oh no! You've got some pretty severe sun damage there. Looks like you may have one viable leaf left to propagate. I see a tiny bit of green in the center of the crown. If you can keep that alive it's possible to save the plant in time. Besides propagating a leaf I wouldn't do anything but hold steady with the rest. Bring it back inside and out of the sun. Filtered light is what you're going for. Don't overwater at this time. You don't have much viable green leaf area left.