"How much Bitcoin do I need to retire?"

You are asking the wrong question because you are still measuring your future with a broken ruler.

The global economy has $900 Trillion in assets, sitting on top of $600 Trillion in debt.

The system is mathematically insolvent. The only way they keep the illusion alive is by printing exponentially forever.

Stop worrying about the fiat price tag. Just get on the lifeboat.