I wish people would stop confusing Bitcoin Gold (meaningless scamcoin joke) with the more serious if just as badly-conceived B2X fork.
Don't expect to get anything at all for Bitcoin Gold, if it even gets listed on an exchange.
For B2X the only way to get a significant profit, in my opinion, is to act now and split your BTC on Bitfinex and dump the BT2 tokens representing B2X. I expect that the few whale orders propping up B2X on the futures market will get overrun in coming days (this evening someone dumped 400 BT2 tokens as a case in point), and people who wait will get little or nothing. By the time of the announced fork it will be all over except for the crying of the NYA supporters.
nm for got usa users are banned by them.