The idea of earning a living helping small business owners and entrepreneurs to start, build and grow their businesses is an attractive one.
There are a number of business coaching franchises that make big promises and I recommend that you do your due diligence carefully on the Internet. Searching for name + scam can be revealing.
The coaching schools also make some big claims about how easy it is to make big money as an independent coach. The problem is that they will often teach you how to coach (based on the life coaching approach of asking questions rather than providing answers). However they provide little support about how you go out and get clients.
You see, small business owners know that if you don't deliver, what they pay you comes out of their pockets. That can tilt the risk of the transaction significantly.