There is no “the credit score”. Any lender is free to use whatever scoring algorithm they like. And they do. Some lenders may choose to use certain scores for certain things, but underwriting has no obligation to use one specific credit score.
Therefore there is no reason for people to care about their credit score, whether it be from FICO or credit karma or whoever.
The only thing you should do is make sure information on the credit report is accurate. And what is your source for claiming you can pay to get things removed from credit score? It doesn’t even make sense, as it just shows the status of your lines of credit. You can’t just make a line of credit disappear as no credit reporting agency or financial institution is going to want to commit fraud for any amount of money that an average person might offer.