Please try below code:
replace code on file
vendor/magento/module-review/view/frontend/templates/product/view/list.phtml
<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
// @codingStandardsIgnoreFile
/** @var Magento\Review\Block\Product\View\ListView $block */
$_items = $block->getReviewsCollection()->getItems();
$format = $block->getDateFormat() ?: \IntlDateFormatter::SHORT;
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$appState = $objectManager->get('\Magento\Framework\App\State');
$registry = $objectManager->get('\Magento\Framework\Registry');
$currentProduct = $registry->registry('current_product');
$product_name = $currentProduct->getName();
$product_url = $currentProduct->getProductUrl();
?>
<?php if (count($_items)):?>
<div class="block review-list" id="customer-reviews">
<div class="block-title">
<strong><?= $block->escapeHtml(__('Customer Reviews')) ?></strong>
</div>
<div class="block-content">
<div class="toolbar review-toolbar">
<?= $block->getChildHtml('toolbar') ?>
</div>
<ol class="items review-items">
<?php foreach ($_items as $_review):?>
<li class="item review-item" itemscope itemprop="review" itemtype="http://schema.org/Review">
<p><a href="<?php echo $product_url; ?>"><?php echo $product_name; ?></a></p>
<div class="review-title" itemprop="name"><?= $block->escapeHtml($_review->getTitle()) ?></div>
<?php if (count($_review->getRatingVotes())): ?>
<div class="review-ratings">
<?php foreach ($_review->getRatingVotes() as $_vote): ?>
<div class="rating-summary item" itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating">
<span class="label rating-label"><span><?= $block->escapeHtml($_vote->getRatingCode()) ?></span></span>
<div class="rating-result" title="<?= $block->escapeHtmlAttr($_vote->getPercent()) ?>%">
<meta itemprop="worstRating" content = "1"/>
<meta itemprop="bestRating" content = "100"/>
<span style="width:<?= $block->escapeHtmlAttr($_vote->getPercent()) ?>%">
<span itemprop="ratingValue"><?= $block->escapeHtml($_vote->getPercent()) ?>%</span>
</span>
</div>
</div>
<?php endforeach; ?>
</div>
<?php endif; ?>
<div class="review-content" itemprop="description">
<?= nl2br($block->escapeHtml($_review->getDetail())) ?>
</div>
<div class="review-details">
<p class="review-author">
<span class="review-details-label"><?= $block->escapeHtml(__('Review by')) ?></span>
<strong class="review-details-value" itemprop="author"><?= $block->escapeHtml($_review->getNickname()) ?></strong>
</p>
<p class="review-date">
<span class="review-details-label"><?= $block->escapeHtml(__('Posted on')) ?></span>
<time class="review-details-value" itemprop="datePublished" datetime="<?= $block->escapeHtmlAttr($block->formatDate($_review->getCreatedAt(), $format)) ?>"><?= $block->escapeHtml($block->formatDate($_review->getCreatedAt(), $format)) ?></time>
</p>
</div>
</li>
<?php endforeach; ?>
</ol>
<div class="toolbar review-toolbar">
<?= $block->getChildHtml('toolbar') ?>
</div>
</div>
</div>
<?php endif;?>
Or for different product per review
<?php
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$product = $objectManager->create("Magento\Catalog\Model\Product")->load($_review->getEntityPkValue());
?>
<a href="<?= $product->getProductUrl() ?>"><?= $product->getName() ?></a>
Hope it works!