???

how do you get the _________ in ruby sapphire?

You need to be more specific, get the what? Unless it's just a rumor, this belongs in the R/S section.

I mean if I have to write a code like 88837234098759 then where do I write it?

You're asking how to use codes? You need a cheat device like a Gameshark and then you enter the codes into it and load them into the games RAM before you start...

I assume you want to run into those "???" that appear when you use invalid digits on modifier codes?