From what I can find, Fisher Wealth Management is a private company providing wealth management services to high net worth individuals. It is based on the investment strategy of its founder Ken Fisher.
To use this service you need 2 things...
Lots of zeros at the right end of your bank balance (unfortunately, my zeros are at the front, not the back).
Confidence that Mr Fisher's strategy is capable of providing the returns that you expect.
It may be the he is the next Warren Buffet and that your investment returns 20% year on year, but it is more likely that the returns are more modest.
I can't comment on the fees and charges for using the service as I don't have enough money to ask them and, as expected, these fees are not published.