Question about the deployed reverse shell not working on my PC, while working while at PWNBOX.

HTB Content Machines
6

Can you connect to you netcat listener from your host system?
Maybe try opening the address+port in your browser http://<ip-of-your-kali-vm-NOT-THE-VPN-ADDRESS>:9001/
If that doesn’t work, check your Kali’s firewall (iptables, nftables, whatever)