I previously used a plugin for the voting functionality on my bbPress forum, but it was not maintained for more than 2 years. Also it didn’t have the sorting function of it. The voting option was also not prominently visible – causing problem is accessibility. So I discarded it and tried to find another one, but there is no such good plugin currently available. Also this should be a core functionality of bbPress itself.
@casiepa thank you for your reply.