Are you talking about a table frame in a layout? If so, there is no title component to a table frame, but you can add text above it explaining the name.
If you are talking about a table view in ArcGIS Pro I'm not sure.
We moved this to an idea. If you are interested in seeing this functionality added to a future release of ArcGIS Pro, go here, add your kudos, and specific use case in the comments.
