How do you count the amount of a specific item in a folder or workspace?

my script doesn't work and idk why but I'm trying to figure out how to count the amount of a item in workspace excluding other items so

for i,v in pairs(#game.Workspace:GetChildren()) do
   if v.Name == "Bubble" then
       game.Players.LocalPlayer.PlayerGui.Bubbles.Amount.Text = v
    end
end

trying to make it only count "Bubble" but it doesn't work

Pretty simple to do

local bubblecount = 0 -- Define variable for counting
for i,v in pairs(game.Workspace:GetChildren()) do -- Get all of the children
   if v.Name == "Bubble" then -- Detect if the children are named bubble
	bubblecount = bubblecount + 1 -- If the child is named bubble, add one to the count
    end
end
 game.Players.LocalPlayer.PlayerGui.Bubbles.Amount.Text = bubblecount -- Once the for loop ends, set the bubble amount text to the count we got from the loop.

Basically everytime you run your for loop, and a bubble is detected a virtual number will go up by 1 which will be used to set your gui text.

Now lets analyze your code and see why it didnt work.

for i,v in pairs(#game.Workspace:GetChildren()) do -- Gets the children - Halfway correct step. Using #game.Workspace:GetChildren()) would actually just run the for loop for however many children there are, but without the #, it would actually iterate through the parts.
   if v.Name == "Bubble" then -- Determine if child is a bubble - Correct step
       game.Players.LocalPlayer.PlayerGui.Bubbles.Amount.Text = v -- Set the gui's text to v - Incorrect step. V is the child, it has no way of determining how many there was. Using i would be the correct step, however since you have parts not named bubble, your count would be wrong.
    end
end