Do you mean you want something like: War and Peace²³
Then you are talking about superscript charters (these are indeed used to
footnotes but also have many other uses)
Method 1
Type "War and Peace23" in the cell
In the formula bar use the mouse to select 23
In the Format dialog, select Font and specify "superscript"
Method 2
To get the number 2 as a superscript, hold down the ALT key and on the
numeric pad (not the top row of the keyboard) type 0178
Likewise for 3; use ALT+0179
For 0 use ALT+0176
best wishes