For example, posts has Repeater and inside another metafields and we need to display title metafield only if media field has image inside
To achieve this we need to create Repeater Query
In Dynamic Visibility we need to select condition Query has items and job's done!
Also, we can create Repeater Query withour query arguments
Then build listing by this query.
After that you can use Dynamic Visibility by your metafield inside of repeater.
To select metafield from your repeater we have dynamic tag Current Object Field
And then simply compare it to value you need