Not sure about the ASVAB scores, but your recruiter can easily check what the requirements are for specific career fields in the Air Force Enlisted Classification Directory. I'm not a recruiter myself, nor have I ever been, but I wouldn't worry too much about the ASVAB as long as your scores at least meet the minimums for whatever career fields you're interested in. As far as enlisting goes, there are only three enlisted career fields in the Space Force: Space, Cyber, & Intel. You'll be spending a lot of time in front of a computer for any of them, so it depends on what you mean when you say you want a job that focuses on computers/tech.