Insert or delete a worksheet

Insert a worksheet

Select the plus icon at the bottom of the screen.
Or, select Home > Insert > Insert Sheet.

Rename a worksheet

Double-click the sheet name on the Sheet tab to quickly rename it.
Or, right-click on the Sheet tab, click Rename, and type a new name.

Delete a worksheet

Right-click the Sheet tab and select Delete.
Or, select the sheet, and then select Home > Delete > Delete Sheet.

Source: Microsoft