Sorry, but Revelation was written TO 1st century Christians under Roman persecution. The events were to shortly come to pass in reference to their time. They were already in the kingdom and the tribulation at the time of writing. The overwhelming majority of the book has LONG since been fulfilled. The 8th head which was judged was Emperor Domition. Only the Great White throne judgment and eternity essentially remain. The book is mostly historical from our vantage point.