Putting BMLT data on a Wix site is fairly simple. Sign into your Wix account and go into the editor view.
Follow this article for adding HTML content to your Wix site: https://support.wix.com/en/article/wix-editor-using-iframes-to-display-visible-content-on-your-site#adding-html-content.
Copy and paste into the HTML content area the following sample HTML: https://raw.githubusercontent.com/bmlt-enabled/crouton/master/croutonjs/dist/sample_jsdeliver.html
Publish and view. You now have BMLT data on your Wix site. You will likely want to customize further because this is sample page. You can view a full list of parameters to do this here: https://github.com/bmlt-enabled/crouton/blob/master/croutonjs/src/js/crouton-core.js#L5.