When it’s unrelated to the major, adcoms can ignore it (or place less value on it.) Much more critical would be appplying to US tippy tops with an overall B average. In your hs, is that 91 a solid A or the low end?
Can your GC explain something reasonable about why you got a zero on the final? That can help. A short mention that uses the oportunity to talk about your great attributes despite this.
Whether the retake situation shows is a matter of your hs policy. Some hs will report the original class, as well as the repeat. I agree, you have better things you could be doing with that time than re-taking an elective.