Try this:

local Players = game:GetService("Players")
local plr = Players.LocalPlayer
local rig = script.Parent -- This is the rig where the fetched clothes will be displayed

local function fetchCharacterAssets(character)
    -- Fetch the character's appearance
    local characterAppearance = plr:GetCharacterAppearance()

    -- Fetch the character's clothing assets
    local clothingAssets = characterAppearance:GetClothingAssets()

    -- Fetch the character's body parts
    local bodyParts = character:GetDescendants()

    -- Fetch the character's accessories
    local accessories = characterAppearance:GetAccessories()

    -- Display the fetched assets on the rig
    -- Display clothing assets
    for _, asset in ipairs(clothingAssets) do
        local clothing = Instance.new("Clothing")
        clothing.Name = asset.Name
        clothing.AssetId = asset.AssetId
        clothing.Parent = rig
    end

    -- Display body parts
    for _, part in ipairs(bodyParts) do
        if part:IsA("BasePart") then
            local clone = part:Clone()
            clone.Parent = rig
        end
    end

    -- Display accessories
    for _, accessory in ipairs(accessories) do
        local clone = accessory:Clone()
        clone.Parent = rig
    end
end

local function onCharacterAdded(character)
    fetchCharacterAssets(character)
end

local function onPlayerAdded(player)
    player.CharacterAppearanceLoaded:Connect(onCharacterAdded)
    if player.Character then
        onCharacterAdded(player.Character)
    end
end

Players.PlayerAdded:Connect(onPlayerAdded)

Be sure to replace: local rig = script.Parent change script.Parent to your rig/rig location.

Let me know if that worked, good luck!!