I’m trying export the textures I made for my model as a single image. That will wrap around the model when I import it into another program. I am a extreme beginner so I apologize if I don’t use the proper terms.
This is not something currently built into SketchUp, which has no internal image editing.
There may be some extensions that can help. Search on “texture”:
… not naming the “another program” is vague. If you search for export extensions using the actual program name (or game engine name) it might help you find a tool that helps.