FfPostCatsSmartcodes.php

/**
 * Woocommerce/post category
 */
/* Custom Editor SmartCode
 * {my_product_cat}
*/
add_filter('fluentform_editor_shortcode_callback_my_product_cat', function ($val) {
	global $post;
		   $terms = get_the_terms( $post->ID, 'product_cat' );
			foreach ($terms  as $term  ) {                
				$product_cat_name = $term->name;            
				break;
			}

	return $product_cat_name . ' ';
});