Set Font and Font Size of IDE
Open PyCharm Settings
File -> Settings.
Appearance & Behavior -> Appearance
Check option Override default fonts by (not recommended):.
Now you can set font family and font size of IDE. Set your desired font and font size and click Apply button.
Set Font and Font Size of Editor
In PyCharm Settings, navigate to:
Editor -> Font.
Set your desired font and font size for editor and click Apply button.
Hope this article helped you.