When you are on the "Activity" tab of your user profile you can choose to track the progress towards tag badges. This however does not update when you get new rep/answer more questions, unless you un-select and re-select to track that tag badge.

For example tracking the "public-transport" badge on my site on the upper left it currently shows "70/100 score" and "5/20 answers" whereas the "tags" field (lower right) reveals that I have 88 score from 8 posts. When I select another badge this updates to the correct scores.