Is it against fair play to not immediately resign when you blunder your queen early in the game?

I assume it’s not lol but I don’t want to be breaking some etiquette I didn’t know exists. He was 11 points up but we’re low ELO and I’ve won games at a greater margin

I assume it’s not lol but I don’t want to be breaking some etiquette I didn’t know exists. He was 11 points up but we’re low ELO and I’ve won games at a greater margin