When we say “consciousness,” we generally mean that we have a sense of awareness based on out intellectual and mental capacities. Our capacities are limited. Allah is above all limitations. We know that he has knowledge and is not ignorant of anything, and He has agency and willpower. So if by consciousness we mean he knows everything and is aware or everything (is not ignorant of anything) then yes He has consciousness (which boils down to His divine knowledge). But if it means that he has an emotional experience or he experiences existence like we do then no.