For any type of license, you must have it used in a single domain only. Although you can use it in a subdomain of the same site.

I did not get your second part about how to use the license, can you please clarify more?

For more: https://mui.com/store/license/#i-standard-license

Regards,

Rakesh

I want to buy the berry dashboard, I wanted to know if I buy standard plus, on how many domains or subdomains of our company can we use it? 
and also how should I use the license in my application or etc...