Anchore player when touched?

Well, if the game immediately starts and the script is not enabled, the script would run and look for something, anything, named Player1. Instead, we can make the workspace wait until Player1 exists in the Workspace.

Secondarily, there needs to be a Debounce value so that if a person keeps touching it the player isn't indefinitely frozen.

local player = game.Workspace:WaitForChild("Player1") -- Makes the Workspace wait until there is something inside it named Player1
local Debounce = false -- The debounce value, to keep a timer from resetting and continuing, repeatedly.

script.Parent.Touched:connect(function())
    if Debounce == true then return end -- If the Debounce and thus the function is already activated, then stop.
    Debounce = true -- If is is not already activated, turn it on.
    player:WaitForChild("Torso").Anchored = true
    wait(15)
    player.Torso.Anchored = false
    Debounce = false -- Now that the function is finished, we can reset it to let it be touched the next time.
end)

Firstly, I don't know if you want to Anchor anyone that triggers your event or you want some people to be anchored when they triggers the Event.

This script will Anchor anyone that triggers the event, the coding will be explain with green text for time sake.

Debounce = false
script.Parent.Touched:connect(function(Hit)--Using a Touched Event and Parameter that I chosen to name Hit.
    local Player = game.Players:GetPlayerFromCharacter(Hit.Parent)--Checking to see if the Part that activated the script is connected to a Player.
if Player and Debounce ~= true then--If it is connected to a Player and Debounce is not true then...
    Debounce = true 
    Player.Character.Torso.Anchored = true--Setting the Player's Character torso that activated the script to true
    wait(15)
    Player.Character.Torso.Anchored = false--Setting the Player's Character torso that activated the script to false
    Debounce = false
    end
end)

This script will Anchore certain Players that triggers the event, the coding will be explain with "Green text" again!

FreezeTag = {"Player","Bob","Builderman","YellowTide","Kenetec","People"}--This table store the Name of people that can be Anchored.
Debounce = false
script.Parent.Touched:connect(function(Hit)--Using a Touched Event and Parameter that I chosen to name Hit.
    local Player = game.Players:GetPlayerFromCharacter(Hit.Parent)--Checking to see if the Part that activated the script is connected to a Player.
    if Player and Debounce ~= true then--If it is connected to a Player and Debounce is not true then...
for _,v in pairs (FreezeTag) do--Loops through the "Table" called FreezeTag
    if v == Player.Name then--If any name in the Table matches the Name of the Player that touch the script.
Debounce = true 
    Player.Character.Torso.Anchored = true--Setting the Player's Character torso that activated the script to true
    wait(15)
    Player.Character.Torso.Anchored = false--Setting the Player's Character torso that activated the script to false
    Debounce = false
            end 
        end
    end
end)

K = false  -- Debounce
script.Parent.touched:connect(function(Duded) --When it's touched it gets the toucher
 if K = true then return end 
wait (0.1)
 K = true 
Duded.Parent.Torso.Anchored = true --Get the toucher's body parts 
Duded.Parent.Head.Anchored = true 
Duded.Parent:FindFirstChild("Left Arm").Anchored = true 
Duded.Parent:FindFirstChild("Left Leg").Anchored = true 
Duded.Parent:FindFirstChild("Right Arm").Anchored = true 
Duded.Parent:FindFirstChild("Right Leg").Anchored = true 
wait (0.1) 
K = false 
end)

--Hope it helped !