How i can evaluate the answer automatically?

To my understanding, you would like to make a quiz form. If that is correct, then I suggest you check the information that is found in this guide — Turn-Your-Form-into-a-Quiz-or-Exam-

However if in any case, you would like the form to display the total score right away or you would like to have the score included in the submission data that you can collect at a later time, then you can choose to use the Form Calculation widget to get the total score. — How-to-Perform-Form-Calculation-Using-a-Widget

Here's a demo form: https://form.jotformpro.com/72184331859967

If you have other questions regarding this, please feel free to contact us again anytime.