Depending on the system in question the logs have a great deal of info on the upgrade status.
You can see the current component, you can see when it passes the torch to DB2 (if Linux), you can then follow the DB2 logs.
There is info there, it’s just easily on the front end. There is nothing in BF (patch) that has a “percent completed” component, don’t think you’ll be seeing this any time soon.