There are a couple of simple steps to upload your website files to the CyberPanel VPS.

In CyberPanel click on Websites → List Website → File Manager next to the desired website:

Inside the File Manager, access the public_html folder (it's a root folder of your domain. If you want files to be uploaded to a custom folder, open it):

When you opened the desired destination directory, in the top-right corner of the File Manager window, click on Upload:

And choose the compressed file that you would like to upload.

After the archive with website files is successfully uploaded, right-click on it and select Extract. Choose the destination directory and wait - your website's files will soon be unpacked 👍