Why is no water coming out of my new kitchen faucet?
Is there an aerator in the faucet outlet? If so, remove it, and try turning on again. These often get clogged from debris you shake lose in the lines during installation. 

Some faucets also require you to remove part of the valve after installation to flush the lines, then re-install. Check the instructions for your faucet. If you could post the make and model of your faucet, we could look at the instructions and tell you more as well.