Fill in the shape

How do I fill in a shape I have drawn with a color?

Is this in the costume editor or is the shape drawn with a sprite and pen blocks?

the shape is drawn with sprite and pen blocks

Make sure the shape is closed, then go inside the shape, and use the fill block.

... in the Pen palette. Read its help screen first.

i cant do it, i tried and when inside the shape, didnt work

Go inside the shape with the pen up. Otherwise the shape to be filled will just be what you think of as the border.

I bet this is why it didn't work for @zhue520. (Welcome to the forum!)