Can I connect MS Loop to Power BI?

ZaiChC97 It's not explicitly mentioned by lbendlin , but Microsoft Graph/SharePoint has an API which can export the .loop contents as HTML, which can then be imported into Power BI using PowerQuery. 

See the code below for a example that has worked for me. 
*Replace the [[placeholder values]] for your SharePoint environment and Loop File 

Source = 
    Binary.Buffer( 
        Web.Contents( 
            "https://[[your.sharepoint.com]]/_api/v2.1/drives/" & 
            yourSharePointDriveID & 
            "root:/[[pathto/yourfile.loop]]:" & 
            "/content?format=html" 
        )
    ), 
LoopContents = Web.Page(Source) // Alternatively, use: Html.Table(Source, ... ) 

Combine the above with scheduled refresh/Power Automate flow, and your loop contents can be kept up to date as changes are made.

See also an idea you can vote for.