Need help

Hi, so what exactly is the SAI? when i filled out the FAFSA application form I indicated that I am Independent and am currently homeless (crashing with a friend) and it said that i got a score of -1500? very confused on that

also how would I go about getting other grants? the full pell grant won’t cover the full 2 years (CC)

I’m doing all of this on my own so it’s very stressful, any help would be greatly appreciated.