How To Score
The objective is to line up three or more of the same colored blocks, either vertically or horizontally, to form a "combo". Creating a combo will cause those blocks to pop and disappear, gaining you points. Bonus points are awarded for larger combos. It's possible to get 10 blocks at once! You may have to play a bit to figure it out.
How To Really Score
Gain big points by chaining combo's together. To do this, one combo must be the result of a previous combo. Either by blocks falling into place to form the new combo, or you forcing them in. The more combo's you chain together, the more bonus points you'll score. The scoring is exponential too! Learning to chain combo's can take some practice, so don't get discouraged. Go play, you'll get the hang of it.