This is really confusing to me How do I make a i,v in pairs loop ,loop a string value using v?

So this script is a data saving backpack script Inventory is a Folder that holds all the items this folder is in the serverstorage Classification is a StringValue to Classify the item name I added it because I tend to change the name of my tool sometimes by mistake and as you know this script uses SetAsync() which means once I join a server with changed name it will be gone forever

as you can see im looping using v but on line 6 it saids and im trying to figure out how I can get this i,v in pairs to loop and get to Classification

local weopon = game.ServerStorage.Inventory:FindFirstChild(v):Clone()

so that it syncs with

    table.insert(Table,v:WaitForChild('Classification').Value)--insert whatever is found  in the table

local DataStore = game:GetService("DataStoreService"):GetDataStore('ToolSave')--
game.Players.PlayerAdded:Connect(function(plr) --when the player is added to the game in the player properties
	local savedstuff = DataStore:GetAsync(plr.userId)-- saved stuff variable means The Data of the player using userID
	if savedstuff ~= nil then --if the data is not nil continue this script
		for i,v in pairs(savedstuff) do --for i,v in pairs the Data Inventory 
			if game.ServerStorage.Inventory:FindFirstChild(v) ~= nil then --Try looop and try find the inventory and if its not nil then continue
				local weopon = game.ServerStorage.Inventory:FindFirstChild(v):Clone() --if it isnt nil the clone it
				weopon.Parent = plr:WaitForChild('Backpack')-- Puts this in the backpack 
				
			end
		end
	end
plr.CharacterRemoving:Connect(function()-- When character is being removed from the game
	plr.Character.Humanoid:UnequipTools()-- Un equip the weopons 
	
end)
end)
 
game.Players.PlayerRemoving:Connect(function(plr)-- when player is being removed
	local Table = {}-- Creates a table
for i,v in pairs(plr.Backpack:GetChildren()) do-- for i,v in pairs loop around the backpacks childrens
	table.insert(Table,v:WaitForChild('Classification').Value)--insert whatever is found  in the table
	
end
if Table ~= nil then-- if table is not nil when the player leaves the game save the game
	DataStore:SetAsync(plr.userId,Table)--  if it is not equal to nil then Set the Data to that using user iD and putting table into it 
end
end) 

I think you've mistaken v for the table it gets when you do the for i,v in pairs. For i,v in pairs just makes so you can say like v.Value = v.Value + 10 and it will do that for every child in the table. So do something more like . . .

for i,v in pairs(plr.Backpack:GetChildren()) do -- Gathers the children of player.Backpack.
	if v.Name == "Classification" then -- Checks every child in the backpack to see if its name is "Classification".
		local classification = v.Value -- Sets a variable to be the value of the string.
	end
end

It just repeats the command with v being the child it's on. So it would check all of the children and for all of the children that have the name of "Classification", it would do whatever you need it to. Hope this helped!