Use EmbeddedServiceConfig to fetch all Embedded Service Deployments using Apache ANT tool from Salesforce.

Sample Package.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
    <types>
        <members>*</members>
        <name>EmbeddedServiceConfig</name>
    </types>
    <version>54.0</version>
</Package>