You can easily locate your MySQL databases details by opening Hosting → Manage → MySQL Databases section:
Once there just scroll down to your desired database and the details will be shown right under MySQL Database, MySQL User, and MySQL Host sections:

As for password, you set it up while creating the database, in case you don't remember it - you can reset it easily.
That’s it! Now you know how to locate your MySQL databases details on hPanel 😊
NOTES: