genesis, does not say how old the universe is, or how old the planet is.
it declares in the beginning God created the heavens and the earth.
it does not say when that beginning was. in respect to the universe,and the planet. only that God created it.
God is eternal he is outside of time. time is for our benefit.
i believe the the planet that God created was around long before God created life on earth.
becuase it says , 2 The earth was without form, and void; and darkness was on the face of the deep. And the Spirit of God was hovering over the face of the waters.
so it is possible that the earth was a frozen planet long before LIFE ,becuase there was no light,or sun. as it says,and DARKNESS was on the face of the deep.
then genesis , declares that God started to create life on earth,the first thing needed was light i.e the sun. God said, let there be light.
then he divided the light from the darkness, in other words he spun the earth. he called the light day,and the darkness he called night,so the evening and the morning were the first day, and that is the introduction of time for man.
the creation of LIFE on earth was just under 7000 years ago. we are only
30 to 40 years short of the 7000 years.