I am not able to call users data through API

Hello Community, I have been using Infusionsoft for my Wordpress Setup where I am using this to store my Users data. Now, I want to integrate my external assessment tool which is hosted on other instance and have been done in React.JS and Django.

I want to develop APIs to synch the user’s table data from infusion soft so that I can authenticate those users on my assessment tool. When I try to get/read users data, it shows I have no permissions for that. I do have permissions but infusionsoft is not letting me to read the users data. I am seeking help here if anyone has faced this problem and can tell how to give users readable permission [All users and Specific users]

Kindly help