Hey i have some questions

Hello i want to start to prepare to join the air force after highschool im currently 18 and im a senior right now and i have a few questions.

1. Besides taking the ASVAB i have a gpa of 3.7 unweighted. I go to an art school in the south. Do i need to send in or take the SAT or ACT to better my chances of even getting in or from a rumor ive heard is if you got really good scores already you can just skip it and go straight to boot camp? (In short, Do i need to pass The ASVAB or can i get a high enough test score to skip out on it?)

2. Im also aware i might need to get a waiver due to my medical history of me having autism. Im currently not on any IEP or any medication or anything catering to my needs on purpose since i dont need them anymore (since ive have gotten into highschool) but i dont want to say one thing and when i get in there and dont mention it and doin some digging they call me up about it. (In short, How or do i need to get a waiver for something of a past medical condition)

If there is also anything else if i should know about joining the Air Force please share and enlighten me on what i may prepare for. Thank you for your time in reading this post.