From your questions below, I see that you need to read the whole page: https://www.super-science-fair-projects.com/science-fair-contest and to download the entry form.
Grade Level: 8
Country: Saudi Arabia
I am: Student
1.How and where is it taking place?
2.How will we show you our projects and how can you inspect our projects if they’re online?
3.How will we receive our prize?
4.What is our prize?
5.If it’s free what’s in it for you people? Contribution.
6.How help our community? This is your project. It is up to you to create it.
PS: Listen to the news, you will find lots of issues that are important around the world, in your country, and your community.