what if the price reaches 1 sats will it be delisted from the exchange.

I doubt they delist it at first.
The ask will be at 1 Satoshi and the bid will have no open orders (if worse comes to worst)
It will never be empty...I would buy a sh*t load if it hits 1 satoshi...because every satoshi it goes up will be 100% profit (5 satoshi = 500% profit)
Imagine if it hit 25 satoshi or more in a few months after the crazy 10000% staking is over.
Do you want to make a bet that the Bid runs empty on one of the exchanges?
I think it will run out soon.
Even with the amount of greed there is in Altcoin buyers... there isn't enough to cover the B3 books even if 80% of the B3 coins are controlled by someone not selling.
I would be AMAZINGLY shocked if B3 has any Bitcoins on any exchange bid by December 25th of this year.