[Question] How much should I care about my undergrad grades?

I am asking because I am very involved with my effective altruism group at my university, currently facilitating fellowships and working on other projects to get more students involved. I also plan to work on a career doing good, and I do not want to go into academia.

I do believe that a degree is very useful because it is important to signal to places hiring that you are at least at a competitive level when compared to other people at the same age range. However, I wanted to know how much I should care about focus on getting good grades as opposed to job opportunities, and working on meta-EA at my university. Any feedback on why getting good grades might be important is welcome, I have a general feeling that it matters but my lack of job experience keeps me from having better insights and from being more motivated in general, and I keep asking myself “what’s the point” of taking a class I will likely not need in the future.