Hello,
Thank you for contacting Rank Math.
As per Google’s guidelines, information for Schema should be visible on the page.
https://developers.google.com/search/docs/guides/sd-policies#content
If you wish to hide the Schema from the frontend, you can select Custom in the Review Location in the Schema Generator:
https://rankmath.com/kb/rich-snippets/#review-location

However, please note that Google shows the Schema in the search results when it thinks the Schema is relevant to the search term.
It is ultimately Google’s decision if they want to include Schema with your website or not.
Don’t hesitate to get in touch if you have any other questions.
Thank you, based on your hint i was able to get the visibility. I am aware of the guidelines of google. I have integrated my Google reviews using a plugin. they appear on the page. hopefully the guidelines of google are fulfilled.
with kind regards
Volker Mnich
Hello,
I am glad that we could address your concern.
If you have further issues with our plugin, don’t hesitate to ask. We are here to help.
Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.