how can i make a script for team tp on spawn ?

You have the right idea! There was just a misconception between PlayerAdded and CharacterAdded. What you have right now only works when the player joins the game, rather than respawning. To fix this, we use CharacterAdded.

Here's the fixed script:

game.Players.PlayerAdded:Connect(function(plr)
	--When a player joins the game
    
    plr.CharacterAdded:connect(function(char)
	    --When a player respawns
    
	    if plr.TeamColor == BrickColor.new("Bright red") then

		    local hPart = char:WaitForChild("HumanoidRootPart")
		    --Waits for the HumanoidRootPart to Load
		    
		    wait(1)
		    hPart.CFrame = CFrame.new(64.69, 49.85, -77.66)
	   end
   end)
end)

Basically, whenever the player's character is added, it triggers the respawn action, or the "CharacterAdded" function. The block of code inside it checks if the player is on the "Bright red" color team, and if he/she is, it will wait for the HumanoidRootPart. Torso is only present in R6 models, but HumanoidRootPart is universal. After the HumanoidRootPart has loaded, it will get CFramed to this coordinates.

I hope this helps you with your game! LMK if anything pops up :)