How do you know how much happiness in the happiness valve?

I have to know first which pokemon game are you talking about. Edit the category so that I can see and then I can answer.

Most newer Pokemon games have a specific person in the game that tells your Pokemon's happiness in firered and leafgreen when you give an item to your Pokemon the closer they get to the screen the...

You don't you should only walk with it if you have ss or hh

Go to the friendship rater..

Some Pokemon games have a specific person you can talk to that will tell your Pokemon's happiness, some Pokemon games show there happiness after giving them an item the closer they get the happier...