Calculate scores

<?php
function calculate_score_save_data_action( $post_id, $form_data ) {

    //the ID of "rate and Approve CRED Form"
    if ( $form_data['id'] == 632 ) {

        //get the current exam post
        $post = get_post($post_id);

        //get the current exams post id
        $post_in_loop_id = $post->ID;
        $post_author_id = get_post_field( 'post_author', $post_id );


        //get current exmas possible score (that numeric value is already set in the exam)
        $post_possible_exam_score = get_post_meta( $post_id, 'wpcf-possible-maximal-score-for-this-exam', true);

        // get all questions of this exam (childs of Exam)
        $all_questions = get_posts(array(
            'numberposts'   => -1,
            'post_type'     => 'question',
            'meta_key'      => '_wpcf_belongs_exam_id',
            'meta_value'    => $post_in_loop_id)
        );

        //if it returns some posts
        if( $all_questions ){

            //start the count on 0 for the scores sum later on (each question/answer has his "is" and "should" points)
            $single_question_possible_score_sum = 0;
            $single_question_real_score_sum = 0;

            //now get the single answers
            foreach( $all_questions as $single_question ){

                //get each questions post data
                $single_question_post = get_post($single_question);
                //get each ID
                $single_question_id = $single_question_post->ID;

                //get value of possible scores
                $single_question_possible_score_is = get_post_meta($single_question_id, 'wpcf-possible-maximum-score', true );
                //get value if real scores
                $single_question_real_score_is = get_post_meta($single_question_id, 'wpcf-real-maximum-score', true);
                //we need to sum this up BEFORE the if is closed and BEFORE the foreach is closed
                //Sum the possible scores of all questions
                $single_question_possible_score_sum+= $single_question_possible_score_is;
                //Sum the real scores of all questions
                $single_question_real_score_sum+= $single_question_real_score_is;
            }
        }

        //Update the Exams real score (total of all questions real score)
        update_post_meta( $post_id, 'wpcf-real-maximal-score-for-this-exam', $single_question_real_score_sum);

//BELOW NEEDS TO BE FINSHED
    //calculate 60% of complete points
        //$percent_op_one = ($post_possible_exam_score / 100) * 60;
    //calculate the % of the reached points
        //$percent_op_two = ($single_question_real_score_sum * 100) / $post_possible_exam_score;
    //If reached %is greater or equal to the must (60%)
    //if ($percent_op_two >= $percent_op_one) {

        // Get author of current exam being reviewed (author of)
            //we already have it: $post_author_id
        //then do some magic and update the User Profile meta badges with the correct badge
        // $all_profiles = get_posts(array(
        //  'numberposts'   => -1,
        //  'post_type'     => 'profile',
        //  'author'        => $post_author_id)
        //);
            //if it returns some posts
            //if( $all_profiles ){
                //foreach( $all_profiles as $single_profile ){
                    // now check if the profiles custom field mathces the current exams $parent (real exam) slug (as exmaple wpml-basic)
                    // if yes, update it to "checked"



    }
}
add_action('cred_save_data', 'calculate_score_save_data_action',10,2);