When we say Allah is not bound by time it means that concept of “time” does not apply to Allah. He does not have a past or present neither He will have a future
Time is relative to this universe we live in and thats it.
In Physics, there no such thing as time. It is hard concept to understand, but there is no physical or metaphysical entity that can be called time. That is why time only has 1 unit. We measure speed by miles/sec or kilometers/sec, how do we measure time? with 1 unit, like sec or min or hrs or days or week
Time is an invention to explain “change” in the physical characteristics of matter like sun, moon, stars, animals, humans, virus, bacteria etc
therefore it is wrong to try to understand Allah by the laws applicable to this universe
He is˺ the Originator of the heavens and the earth. He has made for you spouses from among yourselves, and ˹made˺ mates for cattle ˹as well˺—multiplying you ˹both˺. There is nothing like Him, for He ˹alone˺ is the All-Hearing, All-Seeing 42:11