I have a Msi B360A pro and i was wondering if it is possible to get a display out on the rear USB 3.1 Gen2 C port (want to connect a type c to vga adapter)
Yup the mobo i got is just a regular type cUSB-C, by definition, is not a Display standard, it's a physical interface standard.
USB-C can also be utilized for display if designed/implemented to do so - as it must incorporate "alternate mode". Basically, dedicating some wiring within a connector/cable for display.
That can be implemented either via Thunderbolt3 or DisplayPort Alternate mode. I believe HDMI alternate mode also exists, but it's not very common at all.
However, rear IO Type-C, unless specifically identified otherwise, is typically a data transfer port only (ie no "alternate mode" is present").
No gpu, having massive problems getting the mobo dp to work, im gonna make another thread about it, since Barty answered my original questionWhy do you want to use it as a display output? What CPU and graphics card (if any) do you have?