Couldn’t find another group to post this question in. Please help.

So i totaled my car the other day. The insurance is paying $9,000 on the car which leaves me with a balance of $2,200. The people that financed my car called & told me that they wanted to settle with $1,150 & i would be done paying on the car (perfectly fine with me). I told her i would like it in writing stating our agreement. I asked her if this would hurt my credit with a “settlement” shown on it. I can’t remember exactly what she told me, but i wanted others input on what is supposed to be on your credit once a car is paid off in full. This was my 1st time purchasing a car by myself. I don’t want this to mess up my credit because I’m going to try and get another one hopefully with a lower interest rate. I heard before that when people look on your credit they don’t like to see “settlement” on it. I’m just making sure this lady don’t try & get over on me with this agreement because I’m already trying to get my credit bad good as it is. Sorry if i confused anyone.