Once the stock resumes trading (most likely, OTC), you can exercise your puts. You can buy the stock (let's day, for 5 cents), and exercise them at your put strike price. Most likely you will make more money by exercising than selling (OTC might be illiquid).
As a put holder, you are guaranteed the stock sale at the strike price by the Options Clearing Corporation, regardless of the company bankruptcy. So, hold on to your puts, they are worth good money. Congrats.
your put options may be worthless. I am assuming they have some short dated expiry and while you are waiting for MF to get relisted, they will lose value due to time decay daily. If relisting takes place after expiry, of course you get nothing. If it takes place before, you may still not have enough liquidity on them to make much.
Its kind of ironic, but if there wasn't a bankruptcy, you might have actually made money on those options.