Touched Event sometimes not activating for Jump Pad?

Your code is pretty mess there. I have realized that you have forgot a '.' after the h when getting the property JumpPower from the Humanoid.

Let me write up a neatter code

script.Parent.Touched:Connect(function(hit) 
    local hum = hit.Parent:FindFirstChild("Humanoid")
    if hum then --If it has been found
        hum.JumpPower = 184
        wait(0.5)
        hum.JumpPower = 93
    end
end)

Now that's your code. But I see an issue with it. Every time the user steps on the part they get 184 JumpPower. To prevent that, we would need a debounce.

I'll try to make this as clear as possible since I have hard time explaining debounce

local TouchedPart = false --Our debounce variable

script.Parent.Touched:Connect(function(hit) 
    local hum = hit.Parent:FindFirstChild("Humanoid")
    if hum then --If it has been found
        if TouchedPart == false then --Making sure it has not touched the part before
            TouchedPart = true --So it does not fire another time
            hum.JumpPower = 184
            wait(0.5)
            hum.JumpPower = 93
            TouchedPart = false --"Reconnecting" the event so it runs again
    end
end)

It's basically a holder variable which is used to prevent an event to fire multiple times.

You can always read this article if I did not explain well. https://developer.roblox.com/en-us/articles/Debounce

Remember to accept this answer if it has helped solve your issue