Well, it's always possible to conjecture anything. We can certainly imagine that the Earth is young and that God did a series of miracles the cumulative effect of which was to fake the appearance of age.
Or indeed if it better suited our religion we could imagine that the Earth is trillions
of years old, but God did a series of miracles to make it look younger than it actually is.
All we can do --- all scientists can do --- is report on the age of the Earth if the Earth is not a lie
. If it is, and if the lie was constructed by an omnipotent being, then there would be nothing to say about that except that he has successfully deceived us.