User’s Comments Number: Storing it in a meta field for different uses

I am using this within a plugin, but it can be used within your theme’s function file.

// Create field to track users' comments numbers                                    
function display_educadme_user_comments_number($user_id) {
            if( is_user_logged_in() ) {
                    global $wpdb;
                    $user_comments_number = $wpdb->get_var('SELECT COUNT(comment_ID) FROM ' . $wpdb->comments. ' WHERE comment_author_email = "' . get_comment_author_email() . '"');

                        ?>                          
                            <h3><?php _e('Participation in the website'); ?></h3>
                            <table class="form-table">
                                <tr>
                                    <th>
                                    <label for="user_comments_number">
                                    <?php _e('Number of comments'); ?>
                                    </label></th>
                                    <td>
                                    <input type="text" name="user_comments_number" value="<?php echo $user_comments_number ?>">
                                   </td>
                                </tr>
                                <?php

                } else {}
        }

// Update users' comments numbers
function save_educadme_user_comments_number($user_id) {
            if( is_user_logged_in() ) {
                    if ( !is_super_admin() )
                    return FALSE;
                    update_usermeta( $user_id, 'user_comments_number', $user_comments_number );                     
                } else {}
    }

add_action( 'show_user_profile', 'display_educadme_user_comments_number' );
add_action( 'edit_user_profile', 'display_educadme_user_comments_number' );
add_action( 'profile_update', 'save_educadme_user_comments_number' );
add_action( 'comment_post', 'save_educadme_user_comments_number' );