I have successfully installed Salesforce CPQ and Salesforce Billing in my Salesforce org. However, I am unable to see key Salesforce Billing fields such as Billing Rule, Tax Rule, and Revenue Rule on the Product object. what can be the reason?

Hi @Shubham Nawale,

Refer:

https://help.salesforce.com/s/articleView?id=000381773&type=1 

Hope this helps. Thanks!