Hi @suvoraj747 ,
Welcome to the PBC!
When it comes to growing a Pinterest account and building your audience, there are a few things to consider. The main thing you'll always need to keep in mind is to create inspiring content consistently.
However here are two resources that are helpful:
Also, this entry on the Pinterest blog is also a great resource. Check it out: https://business.pinterest.com/en-us/blog/how-to-build-audience-pinterest/
I hope this helps!