Not to be rude or insulting but I dont think that score will get you into hbs unless you have some other outstanding information regarding your background....like your an African midget that fled a worn torn area on a life raft with 2 holes while battling a rare sickness only to survive and overcome. Then you might get in to HBS with that score.
Again, I am not saying this to be mean, but you have to be realistic. Now, with ALL the wallstreet layoffs going on, competition for an mba has intensified. There will easily be more candidates with 700+ scores not getting into HBS because the pool's average will increase dramatically.
Now, if you do get in...CONGRATS!!!, if not, brush it off your shoulder and try again. The test cost $250 every time you take it but its NOTHING compared to the salary, connections, lifestyle, prestige, and opportunities you will have graduating from a top school like that.
I leave you with one of my favorite quotes-
A calm sea never made a skilled mariner
-(dont remember who said it, lol)