Spacing out lines and letters can help make text more readable. To adjust the letter and line spacing -
Select the text on the template.
Select the Spacing option in the toolbar above the template.
Drag the pink dot to the right for Letter Spacing to increase the space between each letter in the text box.
Drag the pink dot to the right for Line Height to increase space between each line of text in the text box.
The Spacing icon in the editor toolbar will look like this: