There really isn’t anything to answer
The first two posts answered your question: You don’t need much.
If you want the official specs:
https://docs.kali.org/installation/kali-linux-hard-disk-install
They list them on their website
A minimum of 10 GB disk space for the Kali Linux install.
For i386 and amd64 architectures, a minimum of 512MB RAM.
CD-DVD Drive / USB boot support
The reason I added additional information outside of your question was due to you seeming to lack an understanding as to what Kali Linux is. I am sorry if you found that offensive or abrasive. Let me explain:
Kali Linux doesn’t differ from other Debian based distros, except for the tools that are included out of the box.
These tools require advanced knowledge of Linux, networking, and scripting.
Another benefit of a VM is rather than fill up your hard drive with logs, you can take a snapshot of the VM once it’s installed and up to date. Run your audit or assessment, copy the logs, and revert the snapshot.
I assume you came to this forum because the people here have experience. Ignoring that experience defeats the whole purpose of coming here. If you find another forum to ask the same question, I can assume they’ll offer similar advice.
Again, if you interpreted our suggestions as off putting, offensive, or elitist, I apologize. That was definitely not my intention. But you’re not the first person to ask this and you won’t be the last. I’ve been in your shoes and I’ve assisted people in your shoes. You can run Sparta all day but without knowing what the results mean or what to do once you have that information, the entire ordeal is pointless.