Visual Studio 2015 run only on Windows, but with VirtualBox you can create and run guest operating systems ("virtual machines") such as Linux and Windows under a host operating system, in your case, Ubuntu. In this guest opearating system, in this case Window, you can install and then run Visual Studio 2015. You can download VirtualBox for Ubuntu from https://www.virtualbox.org/wiki/Linux_Downloads
Supported Operating Systems for Visual Studio 2015 is listed here: https://www.visualstudio.com/en-us/productinfo/vs2015-sysrequirements-vs#vs
You need at least Windows 7 SP1 to install inside VirtualBox running on Ubuntu to run then Visual Studio 2015. Also, keep in mind that you need a powerful PC to run this on decent speed.