The AX500 is not supported at this time, there is no upstream driver. This is why Dell is still using the AX1650 on the machines they are selling with Linux. This should by supported by the ath11k driver, which I think is targeted for linux 5.9 series kenels, and will likely be out in late fall. Closing as upstream, though I would expect if you want to run rawhide kernels, support should be there in 3-4 weeks.