Hi Sharad,
A happy new year to you and congratulations on your Online Experience going live. Please send me the name of the experience so I can check if it's visible in search.
You don't need to duplicate it for multiple regions - its online so it's accessible worldwide.
With regards to visibility - we all have yet to work out the algorithm 🙂 But using keywords helps with search engine optimisation, so be sure to use keywords like "great for groups", "family friendly" , "teambuilding" for example - whichever are appropriate to yours that people may search to make sure you show up in relevant searches.
We have a very active and supportive Whatsapp group with awesome hosts always there to support each other and answer questions, so if you DM me I'll see if I can put you in touch with the community leaders, Keshav & David to get you joined. They regularly host skillshare sessions for hosts to improve their OE. There is also a Facebook Group for online experience hosts - Airbnb Online Experience Hosts.