There are many factors that go towards building your credit score. The amount your score changes by, and whether it improves or not depends on your other commitments too.
Consistently making payments on any personal loans and bills on time, as well as signing up to the public electoral register can all help influence how much and how quickly your credit score changes. To give yourself the best chance of improving your score, you should ensure that you pay all of your financial commitments on time. Wollit Credit Builder is just a small part of what makes up your credit profile and in isolation will have a limited impact on your credit score.