Okk, well i'm like 13, i;m 5'1 but im norweign so my bones are heavier. How much should i weight to be normal?

I'm norweign or however you spell it, so my bones are bigger and heavier than normal bones. Or at least that's what I have heard... but I'm not sure how much I'm suppose to weight to be on a average weight, but if you can answer that THANKS!