If I’m a young teen still developing but I have high testosterone does that mean my peni will be bigger than normal or atleast good nice sized when I fully develop

It really depends.  But this is what i found

Explanation:

Elevated testosterone will raise your “bad” cholesterol levels, and can thus lead to heart health issues – potentially resulting in a heart attack, cardiovascular disease, or stroke. Risk of sleep apnea and infertility is also heightened if you have high testosterone levels.

know your availability capacity yourself

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.