I don´t know how deep your knowledge is on this matter, but I´m going to leave you some interesting and usefull links for you to read about this subject.
They cover the first steps and what you need to know and be alert when deciding to start running a BTC ATM:
1- The first link explains you "how to start": It goes from Regulation, Bank relationships, Location, Bitcoin ATM type, ...
2- This one allows you to understand if it would be profitable or not for your concrete situation. It talks about more than 10 factors that will affect your return on investment.
3- This last one is a full page of interesting links redirecting you for future research if you want to go deeper...
1- https://coinatmradar.com/blog/how-to-start-a-bitcoin-atm-business/
2- https://coinatmradar.com/blog/revenue-and-costs-of-running-a-bitcoin-atm/
ROI calculator, just in case: https://coinatmradar.com/roi/bitcoin_atm_business_return_on_investment/
3- https://coinatmradar.com/how-to-start-bitcoin-atm-business/