Magento 2 add/update configure products meta title, Description programetically using custom script

Magento 2 add/update meta values of configure products using custom script

 <?php  
 //increase the max execution time  
 @ini_set('max_execution_time', -1);  
 //memory_limit  
 @ini_set('memory_limit', -1);  
 error_reporting(E_ALL);  
 ini_set('display_errors', '1');  
 use \Magento\Framework\App\Bootstrap;  
 require __DIR__ . '/app/bootstrap.php';  
 $bootstrap   = Bootstrap::create(BP, $_SERVER);  
 $objectManager = $bootstrap->getObjectManager();  
 $instance   = \Magento\Framework\App\ObjectManager::getInstance();  
 $state     = $objectManager->get('\Magento\Framework\App\State');  
 $state->setAreaCode('frontend');  
 $product_collections = $instance->get('\Magento\Catalog\Model\ResourceModel\Product\CollectionFactory');  
 $collections     = $product_collections->create()->addAttributeToFilter('type_id', 'configurable');  
 foreach ($collections as $product) {  
   echo "<pre>";  
   echo 'Produc Id : ' . $product->getId();  
   echo "<br>";  
   $sku = $product->getSku();  
   echo 'Produc SKU : ' . $sku;  
   echo "<br>";  
   $productIdBySku = $product->getIdBySku($sku);  
   echo "<br>";  
   echo 'Produc Id BY SKU : ' . $productIdBySku;  
   echo "<br>";  
   $product = $objectManager->get('\Magento\Catalog\Model\Product')->setStoreId(0)->load($productIdBySku);  
   //$category = $objectManager->create('Magento\Catalog\Model\CategoryFactory')->create()->setStoreId(0)->load($catId)  
   //echo $product->getName();  
   echo 'Produc Name : ' . $productTitle = $product->getName();  
   $metaTitle = $productTitle . ' {Content}';  
   $metaDescription = '{Content} ' . $productTitle . ' {Content}.';  
   $product->setMetaTitle($metaTitle);  
   $product->setMetaDescription($metaDescription);  
   $product->save();  
   echo "<pre>";  
   echo $product->getMetaTitle();  
   echo "</br>";  
   echo $product->getMetaDescription();  
   /*}*/  
 }  
 ?>