How to fill with a single color - Vectors

Can someone explain to me how am i able to fill this star vector (that is formed by various vector) with a single color? As i wanted to do a filling stars things for a review thing and i can not for some reason, fill the star vector with a single color.

And the same thing with this heart vector, as i want for it to be empty and when the person clicks the like button it fills up. So i want to take out the black fill color and just have some stroke with it.

thank you!