My hubscores fluctuates from day-to-day or week-to-week. While I don't know the exact combinations of components, I do know these factors are considered:
Is your title searchable?
Have you written at least 500 words?
Did you include original or legally obtained photos?
Does your content match your search. Are there keywords throughout?
Is it laid out in an easy to use way?
Finally, I believe the amount of views and comments are what pushes your score up, so monitor this and remain active in your hubs and with your followers. If you have a facebook, twitter, pinterest or any other website or social media account, post your hub there. You can say "This is my latest" or if you have written about something that someone you know can relate to, put it on their wall for their followers to see. You can also check out the tutorials and forums here at hubpages. They will not only help you improve your score but the more people that are aware of you, the more people that will see your hubs.Try this link: http://hubpages.com/forum/3
I just hopped over to check out your hubs....and there aren't any? I'd be happy to read them if you put some back up there.