Its great that you are eager to start investing in Bitcoin ATM business. Bitcoin ATMs are profitable, but you need to plan the entire business accordingly.
Make sure your entire business calculation is done without considering promotional and other costs.
Include licensing expenses.
However, the business would be more beneficial, if you strengthen all your Bitcoin basics. I rely on this blog
https://www.altcoinsidekick.com/bitcoin-basic-blog for all my Bitcoin queries. You can also check it out.