They were only ordered to worship Allah, making their deen sincerely His as people of pure natural belief, and to establish salat and pay zakat — that is the deen of the correct
The People of the Book who are kafir and the idolaters will be in the Fire of Hell, remaining in it timelessly, for ever. They are the worst of creatures
Their reward is with their Lord: Gardens of Eden with rivers flowing under them, remaining in them timelessly, for ever and ever. Allah is pleased with them and they are pleased with Him. That is for those who fear their Lord