How can we get our question scores automatically calculated on questionnaire forms?

You will need to assign a calculation value for each field and add those calculated values using Form Calculation widget.

Reference guide:

https://www.jotform.com/help/301-How-to-Assign-Calculation-Value

https://www.jotform.com/help/259-How-to-Perform-Form-Calculation-Using-a-Widget

I've cloned your sample form and applied the suggestion above. You can check the final cloned form here https://form.jotform.com/91067229919971.

Feel free to clone it if you want https://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL.

Let us know if you have any questions or if you need further assistance.