By default, the product reviews can only be accessed from within the product tabs and there's no way to add the reviews outside the tabs unless you know some coding.
Well, we have a solution now. You can simply use the Product Reviews element to place the customer reviews and ratings with the feedback form anywhere you need. You can customize the colors, font-sizes and much more.
Here's a quick example of how it looks when what you can achieve when you place the reviews outside the tabs on your single product page -