Hello,
Yes you can install ClamAV for Virus Protection for Email and Filemanager Uploads, but I will not recommend this on a VPS, as "ClamAV" require more resources to run smoothly and it affect the VPS performance having less resources. It's good to install it on a Dedicated server, as dedicated server is having enough resources to utilize.
You can Install ClamAV on a [WHM/cPanel] server from WHM >> cPanel >> Manage Plugins >> clamavconnector Option
