It's possible you're referring to:
* "Scrap", a type of item in the game that you can collect.
* "Ho", which could be a typo for "How" or something else.
To get Scrap in Sonic Riders Zero Gravity:
* Collect it from tracks: Scrap items are scattered throughout the game's tracks. You can grab them while racing.
* Use certain techniques: Using specific tricks or abilities might earn you Scrap.
* Complete challenges: Some challenges in the game may reward you with Scrap.
To be more helpful, please clarify your question:
* What exactly are you trying to achieve in the game?
* What do you mean by "scrp ho"?
Once you provide more information, I can give you a more accurate answer.