How to create a Structure file realm works
 

I have made a realm On Realms Works way back about six years ago. I can make a copy of the realm but cannot export the structure or full\partial contents of my realm. I also Created a brand-new realm to import the files, but there's is always an error. I don't know what do I follow the video tutorial https://www.youtube.com/watch?v=QPVFCSsq1oI&t=12s step-by-step and I still don't know what I'm doing. Just to let you guys know the video does not tell me how to Create the structure file, it's just on the export part.

More than likely the realm is a "legacy" system. Before you can export anything from it it needs to be converted to a different type.

Manage -> Realm -> Game System choose a system and follow the instructions. Be sure to backup the database in case something goes wrong.