So I am trying to figure out how to use "if" logic on this:

"for count in 1 2 3 4

do

echo $count

done"

so the system shows me it count to four when I run this simple script, I am trying to use "if" logic to get it to skip the number three when it counts, I tried finding guides and I have been playing with this for about two hours, can someone help me with this.