You mean HDMI audio or internal audio?
You previously mentioned that audio is working with auto HDApatcher.
Please post Config and IOReg as requested above.
That's an M.2 card, you could replace it with DW1560 or DW1830.
But looking at the brand of the card, it's from an HP System. If I'm correct, you'll need to find out if your system has whitelisting...that prevents non HP branded cards from booting.
Did you copy the Clover folder from the USB to the SSD EFI partition?
Repair permission and rebuild cache?
Yes that should work or try DW1510, works natively.
Does it have the brightness slider in Display preference?
If yes, then follow Post install from here
https://osxlatitude.com/forums/topic/8514-dell-latitude-e7450-clover-uefi-only/?do=findComment&comment=64817
Try adding https://github.com/coderobe/AzulPatcher4600/releases/download/1.2/AzulPatcher4600.kext.zip
to /EFI/Clover/kexts/Other
Post IOReg with kext added
Which version of BIOS are you running?
Probably need to patch your DSDT.
Boot to Clover, press F4, Continue to boot to desktop.
Follow instructions from here to debug issue