@Nalin61
Hello Nalin -
I may be totally wrong about this.
I don't think your Community Center level rankings are based upon the amount of work or new upgrades you have put into your Airbnb property. And it is separate from your Hosting status (Superhost). I could be so wrong about this.
For myself, my Community Center ranking increased with active participation in the Community Center. As I offered advice to other hosts, created guides and offered constructive support to others in the Airbnb community, over time my Community Center ranking level went from a 1 to a 10.
Best,
John