Actually the perfect way of doping this is to follow goolgle mark up structure:
Here it is:
<div>
<div itemtype="http://schema.org/Product" itemscope>
<meta itemprop="mpn" content="925872" />
<meta itemprop="name" content="Executive Anvil" />
<link itemprop="image" href="https://example.com/photos/16x9/photo.jpg" />
<link itemprop="image" href="https://example.com/photos/4x3/photo.jpg" />
<link itemprop="image" href="https://example.com/photos/1x1/photo.jpg" />
<meta itemprop="description" content="Sleeker than ACME's Classic Anvil, the Executive Anvil is perfect for the business traveler looking for something to drop from a height." />
<div itemprop="offers" itemtype="http://schema.org/Offer" itemscope>
<link itemprop="url" href="https://example.com/anvil" />
<meta itemprop="availability" content="https://schema.org/InStock" />
<meta itemprop="priceCurrency" content="USD" />
<meta itemprop="itemCondition" content="https://schema.org/UsedCondition" />
<meta itemprop="price" content="119.99" />
<meta itemprop="priceValidUntil" content="2020-11-05" />
<div itemprop="seller" itemtype="http://schema.org/Organization" itemscope>
<meta itemprop="name" content="Executive Objects" />
</div>
</div>
<div itemprop="aggregateRating" itemtype="http://schema.org/AggregateRating" itemscope>
<meta itemprop="reviewCount" content="89" />
<meta itemprop="ratingValue" content="4.4" />
</div>
<div itemprop="review" itemtype="http://schema.org/Review" itemscope>
<div itemprop="author" itemtype="http://schema.org/Person" itemscope>
<meta itemprop="name" content="Fred Benson" />
</div>
<div itemprop="reviewRating" itemtype="http://schema.org/Rating" itemscope>
<meta itemprop="ratingValue" content="4" />
<meta itemprop="bestRating" content="5" />
</div>
</div>
<meta itemprop="sku" content="0446310786" />
<div itemprop="brand" itemtype="http://schema.org/Thing" itemscope>
<meta itemprop="name" content="ACME" />
</div>
</div>
</div>
You can follow this: https://search.google.com/structured-data/testing-tool
But for your site you have to place this code at specific place where need. Not whole code a needed snipet you can take from here and you have to put in your phtml file.