How many gold will i get ,somewhere i read 1:10 but i think it is too much
you will get 1:1 this is not a coinswap or exchange
if you have 1 bitcoin you will get 1 bitcoin gold
now i guess what you were reading but failed to understand that bitcoin gold will probably have 1:10 value of the bitcoin.
It is not yet comes to the market you are speculating the value comparison with bitcoin. Bitcoin gold will destroy the market place value of bitcoin what it's bump today. However, try to hold the bitcoins as much you can.
BCH dump you may aware as like that this coin also will goes to the dump value in future. Go with ETH or ripple.
Even ETH has got dumped today badly so it is not good to hold ETH also because ETH can get dumped any time, bitcoin is superior and what ever hardfork happens it is a good opportunity to earn free bitcoins through it.