If you exported with QC you’ll have a .png file that codes for the colors
And this will work for cycles
Select all parts (A) and use the texture settings(the checkered sphere alongside the rendering and world settings) and if there’s ‘use nodes’ press that, if not, create one and use nodes
Than you open a new viewing port (dragging the corner of a section of the screen) and set it as ‘node editor’ (at the bottom left corner) there you can see some nodes, press shift+A to add a node (or ctrl+A i’m not so sure) go to texture and image texture, than select a image (the .png than QC created) and pull the color node to the color input(the dot with the same color) of ‘defuse’ that will already be there.
now you’ll be able to see the texture of the model
Regardless of the method, (cycles or blender) you’ll need a object that emmits light if you want anything to render, just in case you didn’t know