Okay, imagine you and your friends are all playing a game together. In this game, everyone starts with a certain amount of points. The goal of the game is to earn as many points as possible by doing different tasks, like running, jumping, or solving puzzles.
But there's a catch - you don't know what tasks you'll need to do until someone tells you! When the game starts, your friend calls out a task for everyone to do. Maybe they say "Run to the tree and back as fast as you can!" or "Find the red puzzle piece hidden under that rock!" Everyone rushes to do the task as quickly as they can, because the first person to finish gets the most points.
After each task is completed, your friend calls out another one. Maybe this time it's "Do ten jumping jacks" or "Draw a picture of a cat". Again, everyone rushes to complete the task as quickly as possible.
As you can imagine, it's a very fast-paced and exciting game! You never know what task is coming next, and you have to be quick and clever to earn the most points.
That's basically what a scramble competition is - a game where you don't know what task is coming next, and you have to be quick to complete each task and earn points. It's often used in sports or other activities where speed and agility are important.