Synchronization MyQ with Apple Watch

Best advice for problems with apps not written by Apple is to contact the developer  

How to contact an app developer - Apple Support 

The MyQ app does support the Apple Watch, so yes, you can.

(My garage door openers are in my Home app, and I can use Siri to control them from either my watch or my phone).

Here's a link to MyQ: https://www.smart-secure.co.uk/chamberlain-myq/myq-app/#:~:text=Control%20your%20smart%20home%20anytime,free%20or%20automatically%20via%20schedules.