Hi,
You can edit the file "yourSite\components\com_hikashop\`views\product\view.html.php", and in the function "show()" add the code:
		$database = JFactory::getDBO();
		$query = 'SELECT vote_rating FROM '.hikashop_table('vote').' WHERE vote_ref_id = '.$product_id;
		$database->setQuery($query);
		$votes = $database->loadResultArray();
		$config = hikashop_config();
		$total_star = $config->get('vote_star_number');
		$rates = array();
		foreach($votes as $vote){
			for($i=1; $i <= $total_star; $i++){
				if($vote == $i){
					$rates[$i]++;
				}
			}
		}
		for($i=1; $i <= $total_star; $i++){
			if(!isset($rates[$i]) || $rates[$i] == null) $rates[$i] = 0;
		}
		krsort($rates);
		$this->assignRef('rates',$rates);Just after:
		if(empty($product_id)){
			if (is_object( $menu )) {
				jimport('joomla.html.parameter');
				$category_params = new HikaParameter( $menu->params );
				$product_id = $category_params->get('product_id');
				JRequest::setVar('product_id',$product_id);
			}
		}
		if(empty($product_id)){
			return;
		}
And then in the view "product / show_default" (in HikaShop > Display > Views), you have the variable "$this->rates" which have all the informations for your "vote statistics" point.
For the spam reporting, the functionality is not available for the moment.