I downloaded LibreOffice and use it on my computer. How can I put it on a computer that has no internet service or is that permissable?

I downloaded LibreOffice and use it on my computer. How can I put it on a computer that has no internet service or is that permissable?

You can copy the installer to a USB thumb drive, a USB external hard disk or burn it on a CD or DVD and then install it on the other computer from there.
However you must use an administrator account to install it on any computer (I’m not sure what you mean with “or is that permissable?”)