How can I edit the text size in a Note?

Hey there, K valerie.

It appears you're wondering how to edit the size of the text for a note in the Notes app. You can see how to format a new in step 3 below, which is from the following article: Take notes on iPhone

"Create and format a new note

Ask Siri. Say something like: “Create a new note.” Learn how to ask Siri.

Or do the following:

1. Tap , then enter your text.
2. The first line of the note becomes the note’s title.
3. To change the formatting, tap .
4. You can apply a heading style, bold or italic font, a bulleted or numbered list, and more.
5. To save the note, tap Done.

Tip: To choose a default style for the first line in all new notes, go to Settings  > Notes > New Notes Start With."

This article also has other great information on using the Notes app on your iPhone: Use Notes on your iPhone, iPad, and iPod touch

We hope that helps. Take care.