So, become an ambassador, it will manage the regional community right? ...
You are correct.
... Is there are specific skill to become ambassador? How many required ambassador for every regional?
Skills and other requirements will be posted soon, both here and at the website. The number of Zambassadors will be determined based on a combination of skills and territory.
You can sign up to be notified of updates and you can also join the Discord #Zambassadors channel to get involved further.
https://discord.gg/Z8bcH2h