This article explains how to restore a single file from a Windows server using Veeam Backup and Recovery v6.5
Open Veeam Backup and Recovery and click “restore”, then choose “Guest files (windows)”
Select the server
They select the backup you want to restore from.
Browse through to the file you want to restore. I recommend copying this to another location and then renaming the document – e.g. WordDoc1-RESTORED.docx