Yes. The score is not particularly meaningful now, but we're hoping to change that in the future, by having various things that people can unlock at certain levels of activity among other things. When we do that we'll be linking the score to other activities around the site.
It would make sense to hook in the test, as well as other exercises (Xiao Hu put together a list of requests, some of which are on our development radar). Right now we're still reviewing answers to all of the existing questions with the goal of adding those to the test so that people can figure out why the answer for certain questions is what it is.