credit score karma

How I can get my credit score higher?

I checked on Karma Credit.com and said one of the main why my credit score is 600 because I have it on 7 accounts. What does this mean? It says I have a closed mind open accounts and 6? How I can get these accounts of my file? I also want to apply for a credit card, credit cards that I get the approval of 600 with a credit score?

They fall naturally after 7 years, it seems that there is nothing we can do about it now. There are other things you can do if: