In theory, you should be able to add the NVMe driver to the ArcaOS 5.0x installer and finish the installation.
In practice, I have not been successful. Partly, that is because I am a beta tester, and have access to the ArcaOS 5.1 beta. That installs with no issues with NVMe. So I didn't try very hard to get 5.0 to install.
What does work easily is to take an ArcaOS 5.0 installed on hard drive, add NVMe driver, and copy to an NVMe hard drive, then boot to it. I've been running NVMe for a while on my Lenovo ThinkCentre M920q (tiny form factor).
I'm new to using NVMe drives, and I bought a cheap 2 TB one, and it failed at a little over 10000 hours of use. I hope these things are reliable.