Hi @PratikSavla,
Information Rights Management (IRM) policies protect sensitive content from unauthorized users by preventing users from printing or saving copies of a file. Currently there is no such function to display a template file using IRM.
As a workaround, you could add the related column as a label in information management policy to document content type, when you open, download or print the file using this content type, the label will exist.
For detailed information, please refer to follwoing article, this is a sample about displaying version column, you could change it to createdby column.
https://www.ilikesharepoint.de/2014/06/sharepoint-display-sp-version-number-in-a-word-document/
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