God doesn’t necessarily work in the same timeframe you are in. Regardless, the story of the rich man who went to Hell is told in Luke 16 versus 19 to 31 and it indicates clearly that the trip to hell for those that aren’t saved in Christ happens essentially immediately. For the record, I’m not totally dogmatic about that position... there is a Judgement Day and the caveat is that we don’t really know for the reason mentioned at the beginning of the comment... mankind does not exist in the same timeframe as God.
Not to put too fine a point on it, but; God is and always has been outside of time. He lives in the “Forever Now”. He knew how it would end long before the beginning; before He made anything. Example: God’s Word calls Jesus Christ “The Lamb slain before the foundation of the world”. 1st Peter 1:19-20, etc. God knew Adam would fail, but He wanted a Forever Family, so He designated His sinless Son to die for all our sins. It’s free, but it wasn’t cheap. It cost the Sacrifice of God’s Only Son. Anyone can have Eternal Life; but they must ASK for it.