Open Settings
Click Accessibility
Turn on Large Text to increase the system font size
Open Settings
Click Appearance
Adjust the Text Scaling slider to change font size
Open Settings
Click Displays
Adjust the scale if you want larger interface text and UI elements
Open GNOME Tweaks if installed
Go to Fonts
Change the font size for Interface Text, Document Text, and Monospace Text
Open the terminal
Run `sudo apt install gnome-tweaks` if GNOME Tweaks is not installed
Open the terminal
Run `gsettings set org.gnome.desktop.interface text-scaling-factor 1.2` to increase font size
Open the terminal
Run `gsettings set org.gnome.desktop.interface text-scaling-factor 1.0` to reset font size