What do you mean exactly by "work at NASA"? Because the range of jobs there is most likely pretty large. What exactly you want to do actually do there? Focusing on a particular place is a bit weird, you should focus on a job instead. Otherwise what happens if you realise you actually don't like the place?

If you want to do some engineering or astro-science then it might be hard without math and physics. But there are lots of other jobs - you could be a janitor there, or drive the crawler which moves rockets into the launch pad, or be a technician or a lawyer or a firefighter...