How can I change the font in Scrivener's interface? I don't care for the current one and I would like to change it to Times New Roman.
To change the font of the application interface in the Windows version of the application:
Tools > Options > Appearance > Fonts
In the Mac version:
Scrivener > Preferences... > Appearance
For changing the default font and other editor's options please refer to the link in the @what's comment to your question.