Even if you don't see how many points does a word worth, you can calculate it by yourself. Every letter has a number in the upper right corner which is its value. Also, on the playing board there are several spaces which worth more if you input any word on them. You can access the Help menu to learn how much worth every space used in order to calculate the value of any word by yourself. To access the Help menu, just tap on option button in the upper right corner and select Help.