How can one cure a bells palsy headache affecting right side of head just above the neck on the affected side?

Anti-inflammatory. The headache and ear pain that come with bell's is caused by strain on the neck and head muscles that are not affected. Your body is trying to compensate for the weak faisal muscles by straining with the one that still work. I get good results by having patients apply heat, and I prescribe something for tension type headaches (like fiorecet) or an nsaid.
No cure. There's no cure for bell's palsy. Treatment is aimed at preventing complications like patching the effected eye, etc.