Godot Editor (Hot Keys)

The description is relevant for software version 2_3_113_99 and later.

General

Hot key combinations in the Godot Editor main window.

Combination	Action
F5	Playback of the main scene set in the: Project→Project Settings→General→Application→Run→Main Scene menu.
F6	Playback of the currently selected project scene.
F7	Pause
F8	Stop scene playback.

A complete list of combinations is available on the official documentation page Default Editor Shortcuts.