VSCode doesn't have a direct command to Toggle the Bracket Pair Guides. This extension adds a command and keyboard binding that will toggle the setting.
How to use
Toggle the Bracket Guides with CTRL+SHIFT+B. (Mac users CMD+SHIFT+B).
There are 3 states for the setting:
Active: will show the guides for the current active bracket pair
True: will show the guides for all bracket pair and highlight the current active pair
False: guides disabled
Requirements
This extension requires VSCode v1.61 or higher. This was the first version of VSCode to include the Bracket Pair Guides.