If you want to create a new sheet with the same design as an existing one, right-click the sheet you want to duplicate, or hover over the sheet name and click the arrow icon. Then select Duplicate Sheet Design.

After you name the new sheet, a copy with the same design as the original is created. It does not include the original sheet's records, and the data is not shared between the two sheets.

Note:
1. If you would like to copy a tab with all the sheets under it, you may refer to this article.
2. To duplicate the sheet's records while sharing the data source, please refer to Multiple Versions.