use below code , you will get two categories images with link
If you don’t want display link remove anchor tag around image and title also
<?php
$args = array(
'number' => 2,
'order' => 'ASC',
'hide_empty' => 1,
);
$Post_Count = 1;
$product_categories = get_terms( 'product_cat', $args );
$count = count($product_categories);
if ( $count > 0 ){
foreach ( $product_categories as $product_category ) { ?>
<?php $wthumbnail_id = get_woocommerce_term_meta( $product_category->term_id,'thumbnail_id', true );
$wimage = wp_get_attachment_url( $wthumbnail_id );?>
<a href="<?php echo get_term_link( $product_category ); ?>">
<?php if($wimage){?><img width="300" height="300" src="<?php echo $wimage?>"><?php } else {?><img width="300" height="300" src="<?php echo site_url();?>/wp-content/plugins/woocommerce/assets/images/placeholder.png"><?php }?>
<h3><?php echo $product_category->name; ?> <mark class="count">(<?php echo $product_category->count;?>)</mark> </h3>
</a>
<?php $Post_Count++; ?>
<?php }
} ?>