Display Field Custom Admin and Customer Panel

function display_order_field_delivery_customer( $order_id ){  ?>
    <h2><?php _e( 'Detalhes da entrega' ); ?></h2>
    <table class="shop_table shop_table_responsive additional_info">
        <tbody>
            <tr>
                <th><?php _e( 'Entrega:' ); ?></th>
                <td><?php echo get_post_meta( $order_id, '_billing_delivery', true ); ?></td>
            </tr>
            <tr>
                <th><?php _e( 'Entrega:' ); ?></th>
                <td><?php echo get_post_meta( $order_id, '_billing_delivery', true ); ?></td>
            </tr>
        </tbody>
    </table>
<?php }
add_action( 'woocommerce_thankyou', 'delivery_display_order_data', 20 );
add_action( 'woocommerce_view_order', 'delivery_display_order_data', 20 );


// display the extra data in the order admin panel
function delivery_display_order_data_admin( $order ){  ?>
    <div class="order_data_column">
        <h4><?php _e( 'Data de Entrega', 'woocommerce' ); ?></h4>
        <?php
            echo '<p><strong>' . __( 'Entrega' ) . ':</strong>' . get_post_meta( $order->id, '_billing_delivery', true ) . '</p>';
            echo '<p><strong>' . __( 'Entrega' ) . ':</strong>' . get_post_meta( $order->id, '_billing_delivery', true ) . '</p>'; ?>
    </div>
<?php }
add_action( 'woocommerce_admin_order_data_after_order_details', 'delivery_display_order_data_admin' );