Should I use the Android Q Beta?
In general productive usage of beta versions provided by Google is not recommended.

Google provides beta versions of upcoming Android versions for developers. Using the beta versions they are able to check if their apps will be compatible with the upcoming Android versions. Also developers can use those images to make some first test with upcoming new features. 

Therefore I would strongly suggest to wait for the official release, especially if the apps that are important to you don't explicitly state that they are Android Q compatible.