I agree with everyone else. Especially at A&M, grades are your top priority for now.
That said, a job, paid or not, does something important. As @HPuck35 says, it gives you your “plays well with others” card. It also shows you are a regular person. I probably wouldn’t do something like a food job, but if you can get a technical position AFTER you get your major, that could be useful.
All in all, it’s pretty peripheral relative to other ways you could marshall your energies, especially given that some resume reviewers won’t give a rip about it.
Good luck.