Port forwarding on a Windows VPS involves configuring the Windows Firewall to allow inbound connections to specific ports. Here's a step-by-step guide to help you through the process:

1. Log in to your Windows VPS using remote desktop or any other remote access method.

2. Open the Start menu and search for "Windows Defender Firewall with Advanced Security." Launch the application.

3. In the Windows Defender Firewall with Advanced Security window, click on "Inbound Rules" in the left-hand pane.

4. In the right-hand pane, click on "New Rule..." to create a new inbound rule.

5. In the New Inbound Rule Wizard, select the "Port" option and click "Next."

6. Choose either "TCP" or "UDP," depending on the protocol your application requires, and specify the port number you want to forward. Click "Next."

7. Select "Allow the connection" and click "Next."

8. Choose the network types for which you want to apply the rule (e.g., Domain, Private, Public). If you're unsure, select all three options and click "Next."

9. Provide a name and optionally a description for the rule, then click "Finish."

10. The new rule will now be created and applied to the Windows Firewall. The specified port is now open and ready to accept incoming connections.

Remember, after configuring port forwarding on the Windows VPS, you may also need to adjust the application or service settings running on the VPS to listen on the specified port. Consult the documentation or settings of the specific application or service you want to use to ensure it is configured correctly.

Note: Keep in mind that port forwarding can expose your VPS to potential security risks. Ensure that you only open ports that are necessary for your intended purposes and that you have appropriate security measures in place, such as strong passwords and updated software, to protect your VPS.