No, to enter bios you must complete POST, POST requires a GPU and you have no GPU. The motherboard has ports but it requires a cpu with an integrated GPU and as rgd1101 said the 2600x has no igpu. So you will need to wait for your gpu.

Do you need GPU for BIOS?

No, either the CPU has integrated graphics, or there is a graphics chip on the motherboard. Without one or the other you wouldn’t get to the BIOS screen.

Can you boot a PC to BIOS without GPU?

It cannot, quite simply without an APU on the board, that port is useless. Thus the need for a dedicated GPU if you’re running a non-APU Ryzen, to be able to even load VGA for the BIOS video out.