I have yet to find any evidence that anyone knows exactly how old this earth literally is. I can accept the number in billions of years, but I would not stake my life as to the literal number.
I agree this earth is very very old, but I do not put much credibility in any who claim a specific age. Most especially when an 'age' of anything is then used as claimed evidence for the fairy 'tail' of evolution.
Some brilliant scientists who had just cloned a man, thinking then they could do it from scratch, challenged God to a “man creating” challenge.
So, God got his pile of dirt ready for the contest. - The scientists started piling up their pile of dirt.
God reportedly said, “Oh no you don’t! You’ll have to get your own dirt!”