When you use structured data, it doesn't show up in the "enhancement" section of Google Search Console. To test your structured data and preview rich results in Google Search Console you need to open the Structured Data Markup Helper tool. The documentation for the tool is here.
Google's documentation for SoftwareApp rich snippets also suggests ...
Is this for a single review of a product (Review.itemReviewed->Product), or a product with reviews (Product.review->Review)?
In the guidelines:
"However, if the review is nested into another schema.org type using the review property, you can omit the itemReviewed property."
That gets you out of the matrix.
In the Guide for Review, Google tells us that a nested review may be appropriate for a product and shows an example including the example in microdata format:
<div itemscope itemtype="https://schema.org/Product">
<img itemprop="image" src="https://example.com/photos/1x1/catcher-in-the-rye-book-cover.jpg" alt="...