Отобразить категории и подкатегории в архивах WooCommerce

Добавить в archive

<?php 
$term = get_queried_object();
$list = wp_list_categories( array(
    'taxonomy' => $term->taxonomy,
    'parent'   => $term->term_id,
    'title_li' => '',
    'depth'    => 1,
    'echo'     => false,
));

if ( $list ) {
    echo "<ul>$list</ul>";
} else {
    // Nothing, do something else!
}

?>

Вариант 2

$queried_object = get_queried_object();
$parent = $queried_object->term_id;
$categories = get_term_children( $parent, 'product_cat' ); 
if ( $categories && ! is_wp_error( $category ) ) : 

echo '<ul>';

foreach($categories as $category) :

$term = get_term( $category, 'product_cat' );
echo '<li>';
echo '<a href="'.get_term_link($term).'" >';
echo $term->name;
echo '</a>';
echo '</li>';

endforeach;

echo '</ul>';

endif;

Вариант 3

<?php 
$term = get_queried_object()->term_id;
$termid = get_term($term, 'product_cat' );
if($termid->parent > 0) 
    { 
        $args = array(
            'orderby'       => 'name', 
            'order'         => 'ASC',
            'hide_empty'    => false, 
            'child_of'      => $termid->parent,
    ); 
    $siblingproducts = get_terms( 'product_cat', $args);
    foreach ($siblingproducts as $siblingproduct) { 
         if ($siblingproduct->term_id == $term ) {  ?>
            <li>
    <?php } else { ?>    
            <li>
    <?php } ?>    
        <a href="<?php echo get_term_link( $siblingproduct ); ?>"><?php echo $siblingproduct->name; ?><?php echo "<span class='count'>" .  $siblingproduct->count . "</span>"; ?></a></li>
<?php }
    } else { 
        $args = array(
            'orderby'       => 'name', 
            'order'         => 'ASC',
            'hide_empty'    => false, 
            'child_of'      => $term 
        ); 
    $subproducts = get_terms( 'product_cat', $args);
    foreach ($subproducts as $subproduct) { ?>
        <li> <a href="<?php echo get_term_link( $subproduct ); ?>"><?php echo $subproduct->name; ?><?php echo "<span class='count'>" . $subproduct->count . "</span>"; ?></a></li>
<?php }
}
?>