I am assuming that you are referring to the "points" you collected as a subscriber or a member to a certain service.such as airline. shopping mall.... we often says that when we talk about how many points we have left in our club-card or mobile phone account. because we wanna receive "awards" if you have enough points in our account. 没有多少积分means that you don't have many points there in your account, you need to collect more point to get what you want :-)

only get a little more credits

I don't have the right number of credits. Is this to do with university?

意思就是积分增加了，但增加的很少

举个例子吧 你现在的积分是500分，因为某种原因积分增加到了502. 新增加的积分并不多。 这就是“没有多多少积分” 也可以说“积分没多多少”