Usually you will find information about this on your dogs food but often it will state an amount for the day and not if you should divide the amout up a number of times each day.
By the time you are allowed to take your puppy home it will be on solid food and the breeder should tell you what food it is having and how many times a day it has some. If the breeder doesn't give you this information then ask for it because changing a dogs diet suddenly whatever the age of the dog can cause stomach upsets and illness.
Most dogs get fed 2 or 3 times a day. Use your common sense. We used to give our labrador 2 meals a day but this proved no good for her as her stomach couldn't cope with that quantity of food in each meal. We now fed her 3 times a day as she is fine with that.
Fortunately food in the pet shops will state how much you should be giving your dog to eat and also what type of food depending on their age and how active a breed you have. Different dogs have different nutritional needs so make sure you get the right food for your dog.