You have an idea for a food delivery app, right? If you’re looking for a co-founder, what else are you bringing to the table?
It’s practically a meme for tech people to have a friend bring them an idea, want them to build it (ie do all the work), but only get half the reward. So again, what do you have other than the idea? The food delivery market is very crowded and you’d be up against billion-dollar competitors. How will you overcome that?
My generic advice would be to create the smallest useful version of your app, and see if you can get any traction with it.