Change text size on the screen
If you have difficulty reading the text on your screen, you can change the size of the font.
Click the icon at the very right of the top bar and select System Settings.
Click on Universal Access.
Select the Seeing tab.
Under Display select the Text size that is big enough for you. It will adjust immediately.
In many apps, you can increase the text size at any time by pressing Ctrl++. To reduce the text size, press Ctrl+-.