For weeks, I have been trying to achieve how to make this.
I know how to do the gradients and the fonts and everything else EXCEPT for the zigzag circle. I only use Photoshop to design as I am really not good with Illustrator.
Can anyone please tell me how to do this?
Like Javi I would recommend using Illustrator (even if you're not good with it, this is very simple), but would use the Star Tool.
Instead of just clicking and dragging to draw your star (which as default is 5 pointed) click the tool once on the Artboard and a menu will pop up allowing you to give the radii of the star and how many points it needs.
Then if you need the object in Photoshop you can just