Sage CRM 2020 R2- Connection to REST API

Hi everyone. I am relatively new to SageCRM(2020 R2) & I have to use REST API for getting and posting cases. I am stuck on:

=>To access a Sage CRM record data via the RESTful API, use the following URL format for your HTTP request:
http://{server}/sdata/{installName}j/sagecrm2/-/{resource}

Q1. I need help with server and installName? Where can I get/find this from? (I only have access to the Sage CRM and I am not able to find these things)

Q2. Can I connect my CRM to AAD and use the REST API with that?