If PBO is on auto and XMP or DOCP or whatever ASRock calls theirs is on and all others are at defaults and your temps are good then you have nothing more to do in the bios but enjoy using your system.
Installing Ryzen Master will give you the official AMD power profiles. I honestly don't notice any performance difference using the AMD high performance vs. AMD Ryzen Balanced. So it may just be a personal preference if you want it to sleep or not. Try both, see what you like.