The credit score is very important for applying for a card. It is the main indicator of your creditworthiness. According to the most widespread system of scoring the numbers are devided as follows: from 350 to 619 - poor credit, from 620 to 659 - fair credit
, from 660 to 749 - good credit and from 750 to 850 - excellent credit. So, you see, that if your score amounts to 690, it can be considered good. However the majority of lenders typically offer more financing options and better interest rates for those whose score exceeds 700. So, inspite of the fact that your current score is good, keep working on the further raising of it.