If you are using a data model in Builder to get content to your website or app, you will not see data in the insights tab for that entry. This is because the data model just delivers content for your app to render, meaning Builder javascript that handles tracking will not be present on your page.
If you would like to have the full power of Builder but still want to tightly control your site’s experience, we suggest using custom components and components only mode to allow your team to build what they need while only using components you have built. That approach allows for full use of Builder’s built in analytics and A/B testing tools.