Creating game package for windows 32 and 64 bit?

I’m nearing release of the first version of my game. My stumbling block now is creating the packaged project for people to purchase. I’d like to package it as a complete product like other games so it can install on 32 bit and 64 bit systems. What’s the best way to go about packaging a commercially viable product? Will it require an installer? It’s a C++ single player game so no netcode is required. Regards