Fisherman:
According to JW interpretation of Bible chronology, the earliest human,
Adam, came into existence some 6,048 years ago compared to scientific
dating of human fossils believed to be much older.
JW interpretation isn't consistent with Bible chronology, so that would be a different question to the one implied by the thread title. Bible chronology, which is wrong anyway, would place the creation of Adam in 4168 BCE, not 4026 BCE as asserted by JWs. (The discrepancy is primarily a result of omitting 213 years from the period between Abraham and the fictional Exodus by starting 430 years from fictitious Abraham's 75th year, inserting 48 years into the Divided Kingdom period because of their incorrect interpretation of Ezekiel's 390 years, and inserting 20 years into the Neo-Babylonian period because of their numerological superstitions about 1914, along with some additional minor errors introduced by not recognising that the relevant ancient societies counted ages ordinally starting from the first year.) Back in reality, we know that various human societies definitely predated the Bible's creation myth by many thousands of years.
Since Jesus validated the creation of Adam and Eve as historical people
and JC’s own lineage is traced all the way back to Adam, Bible
chronology is certified as true and there must be something wrong with
scientific dating.
Special pleading. There's no evidence Jesus said anything attributed to him, or that he did not consider Adam and Eve to be allegorical characters, but if he believed that Adam and Eve were literal people, then he was just wrong. The spurious and contradictory 'genealogies' of Jesus conveniently appeared only after Jerusalem and its temple was destroyed.