Your question doesn't make it clear what exactly you are asking. If you want to know the amount of time it takes from ordering cable to actually having it, that can vary from as little as a week to a month depending on what their schedule looks like and whether or not any special construction had to be done.
Depends
Watch your reciever it will show when done.
How much time do somebody have to wait if they just got cable and its says retrieving channel info?
You should get your channels right away. Isn't the install guy there to assist?
Thanks! Your answer is awaiting moderation.