The thing that most helps anyone’s credit score is paying on time. So, if you always pay your installments on time, your credit will show that to anyone who needs to consult it in the future.
There is a thing called credit utilization ratio. It is a determining factor for having a good credit score and impacts the terms of your loans. If you get cash in the form of installments to pay off credit card debt, your credit score will become better since you will use your credit cards less.