You should ask scholars. Allah said in the Quran, “And We sent not before you except men to whom We revealed [Our message]. So ask the people of the message if you do not know.” (An-Nahl 16:43)

 

No, if one died a disbeliever in Allah and His Messenger, he does not have salvation. Allah says in the Quran, “Indeed, they who disbelieved among the People of the Scripture and the polytheists will be in the fire of Hell, abiding eternally therein. Those are the worst of creatures.” (Quran 98:6)

You must read and ask those who have knowledge about those things. I answered questions I do know.

Almighty Allah knows best.