How to set Different various platforms at different size + Radomly generate

Question

I'm new to coding trying to create a 2d endless runner and only have one platform and struggling on how to generate different various platforms I don't want them to be the same size as the first one I want more than one platform you could jump on and to also have them be in different sizes. One last thing the platforms only come in a straight line I want the platforms to randomly generate all over.

extends Node2D

const OBSTACLE = preload("res://scenes/Platform_big.tscn")

func ready():
Global.currentscore = 0

func onTimertimeout():
var obstacle = OBSTACLE.instance()
addchild(obstacle)

func onScoreTimertimeout():
Global.currentscore +=1

func process(delta):
$Label.text = "" +str(Global.currentscore)

Answer 1

Every time you create a platform you need to generate a random number (see https://docs.godotengine.org/en/stable/tutorials/math/random_number_generation.html)

Everything you need to do after this is setting the obstacles y position to the random number you just generated.

Comments

how would I randomize the positioning specifically cause it'd either not work or I would get an error. Here's the script for the platform for a better reference

extends StaticBody2D

func _ready():
randomize()

func _process(delta):
position.x -= (370) * delta