Galatians 3:17 says the law came how many years after God's covenant promise?

Answer: 430 years

Paul argues that the law, which came 430 years later, does not revoke the covenant God had previously established.

“What I mean is this: The law that came 430 years later does not revoke the covenant previously established by God, so as to nullify the promise.”— Galatians 3:17 (BSB)