You can export SharePoint groups and their users to an Excel file using Power Automate. Here are the steps:
	- 
	Create a new flow in Power Automate and select the "Scheduled - from blank" template. 
- 
	Set the frequency of the flow to run, for example, daily or weekly. 
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	Add a "Send an HTTP request to SharePoint" action to the flow. 
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	In the "Site Address" field, enter the SharePoint site URL containing the groups you want to export. 
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	In the "Method" field, select "GET". 
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	In the "Uri" field, enter the following URL: 
_api/web/sitegroups?$select=Title,Users/Title,Users/Email&$expand=Users
 
- 
	This URL retrieves a list of all the site groups in the site, along with their members' names and email addresses. 
- 
	Add a "Parse JSON" action to the flow. 
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	In the "Content" field, select the output from the "Send an HTTP request to SharePoint" action. 
- 
	In the "Schema" field, enter the following JSON schema: 
{
    "type": "object",
    "properties": {
        "d": {
            "type": "object",
            "properties": {
                "results": {
                    "type": "array",
                    "items": {
                        "type": "object",
                        "properties": {
                            "Title": {
                                "type": "string"
                            },
                            "Users": {
                                "type": "array",
                                "items": {
                                    "type": "object",
                                    "properties": {
                                        "Title": {
                                            "type": "string"
                                        },
                                        "Email": {
                                            "type": "string"
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
 
- 
	This schema defines the structure of the JSON response from the SharePoint API. 
- 
	Add a "Create table" action to the flow. 
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	In the "From" field, select the output from the "Parse JSON" action. 
- 
	In the "Table name" field, enter a name for the Excel table. 
- 
	In the "Columns" field, enter the following column names: 
Group Name, User Name, User Email
 
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	Add a "Create CSV table" action to the flow. 
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	In the "From" field, select the output from the "Create table" action. 
- 
	When the flow runs, it will retrieve the list of SharePoint groups and their members, create an Excel table from the data, and save it as a file in your SharePoint library. You can also configure the flow to send an email with the Excel file as an attachment to the appropriate recipients. 
- 
	Add a "Create file" action to the flow. 
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	In the "File name" field, enter a name for the Excel file, including the ".xlsx" extension. 
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	In the "File content" field, select the output from the "Create CSV table" action. 
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	Add a "Send an email" action to the flow (optional). 
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	In the "To" field, enter the email address of the person or group that should receive the Excel file. 
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	In the "Subject" field, enter a subject for the email. 
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	In the "Attachments" field, select the output from the "Create file" action. 
- 
	Save and test the flow. 
- When the flow runs, it will retrieve the list of SharePoint groups and their members, create an Excel table from the data, and save it as a file in your SharePoint library. You can also configure the flow to send an email with the Excel file as an attachment to the appropriate recipients.