You can get by without formatting the text in your notes—in fact, the Notes app didn’t even offer any formatting at first—but doing so makes your notes more attractive and easier to read.
Learn Basic Formatting
Notes offers most of the basic formatting options you’ve come to expect like bold, italic, and even strikethrough.
Click or tap the Format icon to see a full range of formatting options (Figure 9). To apply formats like bold and italic, you must first select the desired text.