this file use
vendor/magento/module-catalog/view/frontend/templates/product/view/opengraph/general.phtml
<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
/** @var $block \Magento\Catalog\Block\Product\View */
?>
<meta property="og:type" content="product" />
<meta property="og:title"
content="<?= /* @noEscape */ $block->stripTags($block->getProduct()->getName()) ?>" />
<meta property="og:image"
content="<?= $block->escapeUrl($block->getImage($block->getProduct(), 'product_base_image')->getImageUrl()) ?>" />
<meta property="og:description"
content="<?= /* @noEscape */ $block->stripTags($block->getProduct()->getShortDescription()) ?>" />
<meta property="og:url" content="<?= $block->escapeUrl($block->getProduct()->getProductUrl()) ?>" />
<?php if ($priceAmount = $block->getProduct()->getPriceInfo()->getPrice(\Magento\Catalog\Pricing\Price\FinalPrice::PRICE_CODE)->getAmount()) :?>
<meta property="product:price:amount" content="<?= $block->escapeHtmlAttr($priceAmount) ?>"/>
<?= $block->getChildHtml('meta.currency') ?>
<?php endif;?>