It varies a lot between individuals, so it’s really not possible to say. It depends on the bun’s personality, his previous experience with humans and his age. 2 weeks is a very short time for a bunny though, that much I can say. A puppy-dog will take to his owners more or less at once, but bunnies are less trusting since they are prey-animals and their instinct is to be very cautious. It makes sense if you think about how many enemies wild bunnies have.
Keep showering him with love and treats, and I’m sure he’ll come around. They do tend to want to decide when it’s time for cuddles though. And when the bunny decides it’s time for cuddles, the human must comply =)
If you haven’t already you can give him a hidey-box (upside-down cardboard box) with 2 exits (they don’t like to feel trapped), because if they have a safe hiding-place where they are “invisible”, it makes them feel more secure and more willing to explore their environment.