Push rule in Community edition 9.3.4

Dear team, I am trying to access push rule via Gitlab API but it is returns below error {"error":"404 Not Found"}, for this url http://sbstjvmlx204.sun.com/api/v4/projects/62/push_rule. For now i could expose all other sections like project list, merge, visibility , import Except push_rule

Requirement :

I should be able to validate the code in each and commit event.

My questions.

1. Does this feature available in community version via API.
2. Can we invoke a external rest application from gitlab.

What i had tried:

1. git merge request : not needed
2. Api REST/ JAVA : showing error