quetions form with calculated grade

hi
i create a quations form with repeater that connect to “quetions” db with filed “quetion_code”, i want to save all grades of the quationson “answers” db with filed “quetion_code” and “greade”.

  1. whan i save the answers i want that the “quetion_code” save to (now its just save the garede)
  2. i want to add button that submitted all the thw answers on the repeater on one click
  3. i want to calculate the grade of any quetion (by sumarize) and display the user the result of this quiz.

this is my editor -
https://editor.wix.com/html/editor/web/renderer/edit/f463e624-0373-44bf-8d94-bc829e143545?metaSiteId=cceb8609-e8ea-480e-98e7-7c8bd651f9d1&editorSessionId=ee28bc75-4ef5-4cb0-96ca-e966e8bdcd5e&referralInfo=dashboard
sorry its in hebrew

please help!!