I have another theory which is my favourite, I want Veer to defeat death. Just like Prem miraculously survived the fall from the cliff. Veer should survive the fatal attack too, but he will make others believe he is dead, so AmDheer could unite. No one other than katham Singh should know about the truthđ. He will hide himself from the world and live an anonymous life (life he always wanted to away from royals)
A and R will figure out that PS killed V and will punish PS. RM will probably die when she realizes that PS destroyed Veer's life.