Thor lived. He probably wishes he didn't, but he lived.
He got the Stones. He snapped his finger. Half of all life was wiped out. Five long years later, Ant-Man turned up having been trapped in the Quantum Realm for that time. Turns out you could use it for time travel. We all went back in time to retrieve Stones in various points in our history. From what I heard, that worked, but Thanos from 2014 showed up and there was a big battle. He was, ultimately, defeated. There's more detail, but that's the gist.