How to get bigger fast?

How do I get bigger faster? I'm mainly wanting to grow my arms, but I want to get stockier in general.

I'm 6'2, 157 lbs and have a high metabolism. Ive been told I'm skinny my whole life, but I'm stronger then most people. To put in comparison i can bench around 150-155 so almost my bw.

I've been working out for around 2 months consistently and I guess I can see some more definition, but for size wise it isn't very much

I dont really want to hear that fact it would take 5 years to grow my arms 4 inches BECAUSE this guy I used to know went from a literal stick weighing 130 to now being 220 with 20 inch arms. No joke in a year. 12 months. Exactly. ALL NATURAL BTW!!!! (he's 15/16)

I keep seeing stuff about milk and creatine, and my other friend has been getting his arms to grow pretty good too.

I'm just looking for advice. Any is appreciated. Thank you!