i have finished the game and beaten the final boss but my progres is at 91% what else do i have to do?
Optional activities and quests like the mansion, alchemy mini-quest. Also, check out vagabond's camp and Octa church - they have their own small questlines.
i have done everything you mensioned when i press the help button no text appear
Help function will give you tips only about the main quest and secondary objectives you discovered yourself. For example, if you won't visit Octa church on your own and take a quest there, help option in the menu won't mention it.
Besides, it's optional stuff - don't get fixated on it.