// Register the field

function wpf_add_course_count_field( $meta_fields ) {

    $meta_fields['enrolled_course_count'] = array(
        'label' => 'Enrolled Course Count',
        'type'  => 'text',
        'group' => 'lifterlms',
    );

    return $meta_fields;

}

add_filter( 'wpf_meta_fields', 'wpf_add_course_count_field' );

// Sync course count when a user is enrolled

function wpf_count_course_enrollments( $user_id, $course_id ) {

    $student = new LLMS_Student( $user_id );

    $courses = $student->get_courses();

    wp_fusion()->user->push_user_meta( $user_id, array( 'enrolled_course_count' => count( $courses ) ) );

}

add_action( 'llms_user_enrolled_in_course', 'wpf_count_course_enrollments', 10, 2 );