How can i tell to a script to run a script 6 times in a row?

Hello!

I didn't understood much, but from what I think you want the code to repeat 6 times right? Well, there are multiple ways to do that. First: for loop:

for i = 1, 6 then

local Dice = math.random(1,3) 
hint.Value = '3'
task.wait(0.9) -- use task.wait instead of wait
hint.Value = '2'
task.wait(0.9)
hint.Value = '1'
task.wait(0.9)

if Dice == 1 then
        P.CanCollide = false
        end

       if Dice == 2 then
        P.CanCollide = false
        end

         if Dice == 3 then
        P.CanCollide = false
        end

end

Or a repeat loop:

-- Only an example
local numberOfRuns = 0

repeat task.wait()

-- Do something here

numberOfRuns += 1
until numberOfRuns >= 5

Anyways, this is based on what I understood.