There is no reward in heaven for advancing some system of human organization. Not Democracy, not Socialism. Ziltch.
Even one's particular group or cult does not get one into Heaven.
You either act right,- or you don't. That is all there is to it.
[The Left has clearly made politics into a religion and have found support for this from Hegel. And almost all people that are religious also try to make their religion into a political system and assume that that great mitzva will get them into Heaven. That is just one more of the many ways people go wrong.]