Originally Posted by Greybeard999

You have several things going on, obviously. Overheating doesn't kill a battery, but your battery is toast.

You need to get codes read and post the numbers here, (Just the numbers, not descriptions) otherwise we can't help other than to guess. Get codes read before disconnecting the battery. And don't be driving the car around anymore until we know more about what's going on. If it's overheated badly enough, or the timing chain has jumped teeth you will destroy the engine. (If you haven't already)