How to display total user count by specific role in WordPress as statistics?

insert this code in your theme functions.php and use this shortcode [users_count_bro] to display where you want

function total_count_bro() {
    $out="";   
    $user_count_data = count_users();
    $avail_roles     = $user_count_data['avail_roles'];
    foreach ( $avail_roles as $role_key => $role_count ) {
        $out .= $role_key.':'.$role_count.'<br/>';
    }
    return $out;
}
add_shortcode( 'users_count_bro', 'total_count_bro' );