The precise number will oscillate around a bit and is debatable, but it is EXCEEDINGLY unlikely it will ever change to less than 4 billion years, or more than 5 billion years, and you’ll NEVER see it change to 4.5 million years, 450,000 years, or...6,000 years.
I doubt God consulted a science text when he created.
If one considers that the universe is becoming less dense from the creation event until today and into the future, then by General Relativity the passage of time passing more slowly from the current viewpoint of Earth, I believe it can be demonstrated that appx 4.5 billion years can indeed be the equivalent of 6 days.