On the menu, clickInsert.
When theSpecial Charactersmenu box appears, pop in ‘Superscript’ or ‘Subscript’ into the search box.
That will bring up a menu of options you’re able to select from.

you’re able to also draw what you’re looking for.
Just use your cursor to draw in the box that saysDraw a symbol here.
That will bring up search results that attempt to match your drawing as closely as possible.

In your text, place your cursor where you want the superscript or subscript to appear.
Do not highlight anything; this process inserts the text for you.
Make your selection from the choices provided.

That will undo the formatting and place your text back to normal.
Why Use Superscript or Subscript in a Document?
There are many reasons to include both superscript and subscript when you’re writing in Google Docs.

In writing, superscript and subscript can indicate footnotes and other citations.
Trademarks and service marks, for example, are written in superscript, like this: TrademarkTM.
Mathematical equations, scientific equations, and other types of writing also use superscript notations.

Subscript is used in similar ways.
A mathematical equation, for instance, might be written like this: An=An-1+An-2.
Chemistry compounds, like H2O, also use subscripting.

You’ll need to remove the competing extension before you’re free to use these.

