In order to invest on Tokenomica, you have to be registered on the Tokenomica platform and must pass the KYC procedure.  As for now, citizens from the following countries are prohibited from using Tokenomica.

How to register the Investor account?

The detailed information on setting up an investor account is available on this page:

Can a legal entity (a company, a fund) become an investor?

In short, yes. Create a business account and complete your company verification in order to invest as a legal entity.