credit score higher

how can i get my credit score higher>?

I’m refinancing my house and my credit score only 648 how can i get it higher in less time??? and suggestions?

Eliminate any negative items, Pay down any credit card with a balance of more than 50% of its overall line of credit, example; if you have a credit card that is $2000 don’t max it out you use 3% to 50% of it. don’t apply for to many credit, and if you don’t have much history try to apply for one or two card to make some history. if you have negative items you can dispute them yourself. ones they are fix, your credit score will improve. i been working with www.lexingtonlaw.com they are a little costly but they improve my credit score by 19 points in the tree month i been with them.