Rules in the sonar 9.4

I am using the version 9.0 and I would like to know how much Rules are betwen 9.0 and 9.4.

Hey there.

I suggest reviewing the release announcements (What's New in latest releases | SonarQube) between SonarQube v9.0 and v9.4 to understand what’s changed. We don’t keep a running tally of rule changes on-hand.