You need to update the Bios version to at least 4801.
As you bought both new, you need to use/borrow an older supported cpu model to update with or take the PC to a local pc sales/repair store and have them update it for you (they may charge a small fee).
Another option is apply for a loaner cpu from AMD (but could be up to a week or longer to get it).
Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T..