You can enable notification dots on the app icon. You will only get a red dot with and exclamation mark in it. I don’t think Bliss does a count number within it. Could be a topic for a feature request I suppose; many others have asked about this also.
You need to enable notification dots specifically for the launcher:
Settings > Apps and notifications ↓ Advanced > Special app access > Notification access > select Bliss launcher and allow notifications.