I managed to get hold of a 5600x and I saw that the b450-a pro max by MSI supported it, however, it needs the bios to be flashed.
The issue is that when I click on the BIOS from MSI's website it says not found, so would anyone happen to have '7B86vMC.zip' since MSI do not for some reason.
https://download.msi.com/bos_exe/mb/7B86vMC.zip thats the link that MSI takes you to for the file
https://www.msi.com/Motherboard/support/B450-A-PRO-MAX#support-cpu and this is the compatibility list