@chrisdev122 i am just another user, but depending on your use case and workflow, you may or may not need nucleus altogether. with nucleus workstation being deprecated/removed, if you are looking for team/livesync workflow, for example, you’d need nucleus enterprise stack, which you will need to register with a developer account on NGC (www.ngc.nvidia.com). if that is a feature not required in your workflow, you could try to bring USD data in and out of OV via normal file operation given the DCC you use have USD implementation for import/export functionality.
below are some compilation of responses from the mods/devs that may be worth checking out:
and here is the instruction for setting up the enterprise stack if you do decide it’s something you need: