Well, the adoption of bitcoin and any other cryptocurrencies differ in every countries. Some of which consider bitcoin either legal or illegal. And if you are planning to create such brick and mortar business that accepts bitcoin, it would be better to consult with a financial or legal advisor in the process.

Anyhow, I'll just leave a link that contains countries where bitcoin is legal.
[1] https://www.investopedia.com/articles/forex/041515/countries-where-bitcoin-legal-illegal.asp