Are you looking to see what a shortcut already does in Obsidian, or are you looking to see if a shortcut activates something outside of Obsidian? In the second case, you’re looking for conflicts between Obsidian shortcuts and other software of the OS?
If you on are macOS, apps such as KeyCue can be helpful in looking for conflicts. Or ShortcutDetective, which is a bit cranky but can find things that KeyCue doesn’t know about.
Within Obsidian, of course, the Settings > Hotkey panel reveals most of what Obsidian knows about shortcuts.