if you don't eat fruit or veg can it effect puberty?!

well alot of ppl don't. I'm 13 it doesn't affect it watsoever. So don't worry. But fruits and vegs increase ur life sapn by 15% so eat as much as you can dude. It is a very important part of ur diet...e

Depending on the general state of your diet yes....prepuberty is a really important stage for both young men and women, they are growing into their adult form and well if you are underweight and suffering from mal-nutrition (which can be present well outside of the type of poverty we hear about in africa and other 3rd world countries) then yes this will have an impact on your adult body.
If you really cant handle fruit and veg then you need to at least make sure you are generally eating well and maybe taking suppliments from the health food store to make up for your lost vitamins,Or drinking fruit juices?
Hope that all helps

Not eating ANY fruit or veggies can affect your overall well being.
Fruits & veggies are all a part of your dietary needs for your body to function properly. Without fruit & veggies you become constipated, bloated, generally ill at ease.

YES you could possibly not reach your full intended height, you may not develop fully. It's important if you want to grow big and strong (hahahah I sound like a parent). These years are most important to have those nutrients, take vitamins too!

lack of proper nutrition can affect you for the rest of your life.

yes