Your score on the home page and your score on your profile are usually different by about 10 points. If you keep entering every day, your scores will stay that far apart. IF you miss entering for a day or two or 90 some days as Jake did, Your score will drop. Once you start entering again, your main score will come up a certain amount each day, but your profile score will show you where you should be if you had not missed entering notes every day.
Hope this helps you out.