Go to the main page of RuneScape. At the top is a kind of menu; select "Community", then "Hiscores". You can get the information there.
Work your way up to 63 hunter and hunt carnivorous chinchompas until 99 hunter. It's the fastest and easiest way to get 99 hunter and you make a lot of money on the way.
1,228,825 Exp
The total exp is 13,034,431 experience for a 99 stat on RuneScape.
There is a girl that has 99 on all skills her runescape name is 'xxphatmagexx'.
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Heaps. iT takes 4000 hours of work to get to level 99 in all skills (according to runescape)
84 - 99= 130539525 84-99=149379
TRAIN
you train it
There are no cheats in RUneScape. Getting level 99 in ANYTHING requires a considerable effort.
you keep training your skill to get up to lvl 99
Farming,Slayer,Agility,and summoning EDIT. Summoning isn't supper hard but thanks. Runecrafting and Mining should be added to this list.