Suck at "if" functions [FIXED]

[Jomhob]

I’m trying to make it so that if the parent UI isnt visible, then the main script of it doesn’t run, so it doesnt lag out the game. I really suck at if functions, so if somebody can help me, it’d be great.

Screenshots

[Jomhob]

nevermind, i was missing some stuff

[AviaSky]

Just saying but if you are using if you have to add two equal.
Example

if script.Parent.Visible == false then
    script.Parent.ActivityCore.Enabled = false
end

Like that

Changes
if script.Parent.Visible = false then
GOES TO
if script.Parent.Visible == false then