Assuming you have successfully downloaded a copy to your own computer, you have 2 options.
1. Upload the installation file to your VPS.
2. Go to your VPS desktop and download
MT4 from your broker (not all VPS services support this - some only allow you to upload files from your VPS connection).
In any event, once you have gotten the installation file onto the VPS, run it there. If it tries to create a demo account, cancel it. Inside MetaTrader, click File, Login. Give it the same account number, password, and server that you use from your personal computer. If everything goes right, you will have MT4 running in both places accessing the same account.