After you file

Im referring to the penalty, which I did pay. It was 53 bucks which I payed about 4 weeks ago. I want to know an estimate of how long it will take to see this refund that I am due? I filed my taxes at the beginning of Oct. I did apply for an ext in April. Will this take longer since this is not the filing season? Sorry that I sound like a novice but this is my first time filing late.