It can happen within days if the company agrees to not oppose revocation by Settlement, which means they can thereafter file a Form 10 to try to re-register their stock, or it can take weeks to months if the SEC needs to revoke the stock by DEFAULT, which means the company would never get their stock re-registered.
Whenever revocation happens, and it WILL happen, the stock can no longer trade and the value of shares instantly goes to zero.
To bite the worm of incite is to bite the HOOK of the antagonist . They win .