It really depends on how long you play, and if you really want it or not. It took me like a week and a half, from 81. 81-95 with swordfish F2P, 95-99 rocktail P2P. That's what I did, not sure if that's what you'd wanna do though.
It depends how long you are on Runescape.
That Entirely depends on how many hours a day you play runescape.
It depends how much you play and what fish you're cooking.
This entirely depends on what level you are starting at and what you are using to train the skill.
about 70-100 days when you have got the level for nature runes
It depends how long you are on Runescape.
depends on what your cooking
4-8 hr
That Entirely depends on how many hours a day you play runescape.
It depends how much you play and what fish you're cooking.
125,851
depends on what your cooking
Getting from level 83 to level 99 coking in Runescape should take about a week if you are playing 10 hours a day and cooking rocktails on bonfires with cooking gauntlets.
Thousands upon thousands. You're better off cooking swordfish---it'd take fewer of those.
13,034,431 xp
less than 3 months
1 month