Try to add the following PHP code snippet to the child theme functions.php file to do this

add_action( 'woocommerce_single_product_summary', function() {
	global $product;
	?>
	<div class="product-share">
		<span class="share-title">Date</span>
		<?php echo $product->get_date_modified()->date('F j, Y, g:i a'); ?>
	</div>
	<?php
}, 100 );