So I’m in 8th grade but I’m taking high school geometry and it goes on your high school transcript. I got a c plus in my first semester. How much would one c plus hurt me?
You have time to recover, but nobody can guarantee that the mark won’t be a difference-maker at an institution that is a reach for you. My impression, though, is that this will be discounted by most colleges if you show improvement in more advanced math & geometry classes. Just step up your game, and good things will happen.