If you can control Godzilla

I would ask him to help me save the world.

rebuild all of that destruction you caused XD, but yet i would say "help, the kaiju are trying to take down the city, so team up with the jaegers if you have to"

I would make him kill Justin Berber with his atomic breath 

Secretly teach him to play dead and repeatedly kill him in every major city that he'd attack. Be like, "Yeah I punched Godzilla to death, come at me bro."

I will tell him if he want's to go to Applebee's.

hide n go seek

I'd go around the world to spread the glorious words of our Godzilla. And then threaten Godzilla's nuclear fury on the heretics!

Ask foa a hug.

Send him to North Korea and make him take a big dump on their leader.

Yes, that's really what I would do.

i don't mind cause I'm an American but that might affend some people so watch your words please Godzillasaurusrex

There would be a list of people who would come home to a house-size pile of radioactive poop lovely placed upon their dwelling.

World peace 

good question well lets just say that the world would not be safe :)

1st i'd train him to destroy my enemies and wipe out everything else i don't like

then i'd train him to be like a riding horse , or riding giant lizard man thingy , or however this works