Hi @Albertax ,
If you are trying to get the image to display in your word template, you need the file content value to put inside this word template.
Demo flow:

1. you need to add an image control into your word template so that it can display the image:

2. Send an HTTP request to SharePoint:

Uri:
_api/web/Lists/getByTitle('test')/items(@{triggerBody()?['ID']})?$select=image
You can just copy and paste it in your flow, but please be noted that the image string after "$select= " is actually the logic name of my image column in SP list, please change it according to your own image column name.
3. Initialize variable:

json(body('Send_an_HTTP_request_to_SharePoint')?['d']['Image'])['fileName']
4. get file content using path

Fiel path:
/SiteAssets/Lists/List_id/@{variables('image name')}
You can find the list id value in any flow run history, for example, you can find it in the input of your trigger:

5. populate the word:

Hope this can help.
Best Regards,
Hen Wang