Add a listing tab to redirect to shop page

In your child theme functions.php file add this code

function listeo_add_shop_listing_tab(){

	if (!class_exists('WeDevs_Dokan')) {
		return;
	}
	$queried_object = get_queried_object();


	if ($queried_object) {
		$post_id = $queried_object->ID;
	} else {
		return;
	}

	$vendor_id = get_post_field('post_author', $post_id);
	$is_vendor = get_user_meta($vendor_id, 'dokan_enable_selling', true);

	if (!$is_vendor || $is_vendor == 'no') {
		return;
	}

	$vendor            = dokan()->vendor->get($vendor_id);

	$store_url         = $vendor->get_shop_url();
 	echo "<li><a href='".$store_url."'>Shop</a></li>";

 
}
add_filter('listeo/single-listing/navigation-end', 'listeo_add_shop_listing_tab');