Why doesn't it let me walk through?

...Fixed.

function onTouch(hit)
    local plr = game.Players:GetPlayerFromCharacter(hit.Parent)
    if plr == nil or plr:GetRankInGroup(947529) < 9 then return end
    script.Parent.CanCollide = false
    wait(2)
    script.Parent.CanCollide = true
end

script.Parent.Touched:connect(onTouch)

If the above doesn't work, use the same answer as what Code used and add: 1) outside of the function put ~~~~~~~~~~~~~~~~~ debounce = false

Right under
 ~~~~~~~~~~~~~~~~~
if plr == nil or plr:GetRankInGroup(947529) < 9 then return end

add:

debounce = true

also under

script.Parent.CanCollide = true

add:

debounce = false

This is all only if the answer above doesn't work, the answer corrects a mistake but I don't have time to test it so I am just giving you a solution if the answer doesn't work.