If you have a page linked to a model or a block linked to a model and the model's access control level policy lets anonymous users view the data and, therefore, the page, you can control whether search engines see the page.
Access level controls
Access is controlled at the model level with an access control policy. See our knowledge base article, About access control policies.
You can check if your page is available to anonymous users by first opening the page's Settings. On a page in edit mode, select the settings option.
If the Link to model option is not selected and there are no blocks on the page linked to a model, then you can't set the access level controls to anonymous.
If the Link to model option is selected and shows the model, you can open the model's access control page to see if the "Anonymous" role has been added as a policy.
On the Model access control page, check to see if there is a policy with the "Anonymous" Role and if it has the "Allow" Permission.
This means that any pages linked to this model are visible to search engines. So, it's important you configure the page's SEO settings to hide any sensitive data. See our knowledge base article, Configure your page settings.