You can add the shortcode to the home page editor (in Text mode) like this:
<div style="display:none;">[site_reviews_summary schema=true]</div>
HOWEVER…
Depending on how you are using the reviews, this has the potential to do the exact opposite of what you are hoping to accomplish in Google results.
If your website represents a single business and the reviews are for that business, then you are fine.
If your reviews are for multiple businesses or products on your site, then doing this will cause Google to add a ranking penalty to your site in Google results.
The reason for this is because Google will detect that you are misleading your visitors, giving your site a rating that does not apply to the site as a whole.
There was another user of Site Reviews that tried what you want to do (except without visually hiding the summary): They were collecting reviews for different services that they offered, but wanted to show the overall rating of all services on the homepage. Google detected this as being misleading and their SEO took a hit.
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This reply was modified 6 years, 8 months ago by
Gemini Labs.