To find a list of users in your organization who have connected a specific integration to their Simpplr profile, you need to have Salesforce access, and it's recommended you're familiar with running Salesforce reports.
Note that your Salesforce environment should have a report type created already for Simpplr People Integrations. You may not need to create a new report type as shown in the video. You might just be able to start at the 2:00 mark of the video. In your Salesforce Reports tab, look up Simpplr People Integrations to ensure the report type as already been created.