How would i Pull the picture for a main menu screen c++

I’m getting into making a main menu using c++ how would i acquire my picture or call within program?

The easiest method would be to use UMG for this. Create a new UMG Blueprint and give it a nice Image background.
You could always create a C++ UUserWidget and reparent the UMG Blueprint to that, which would then mean you will have easy C++ access to it.

WCode mentions it in his tutorial here:
https://wiki.unrealengine.com/UMG,_How_to_extend_a_UUserWidget::_for_UMG_in_C%2B%2B.