Bukkit

users:
    :
        permissions:
            permissions.*: true
        groups:
        - admin
    conzoman17:
        permissions:
            permissions.*: true
        groups:
        - admin
groups:
    default:
        permissions:
            permissions.build: true
            ChestShop.shop.buy: true
            ChestShop.shop.create.: true
            ChestShop.shop.sell: true
            essentials.balance: true
            essentials.pay: true
            essentials.help: true
            essentials.mail: true
            essentials.msg: true
            essentials.recipe: true
            essentials.clearinventory: true
            essentials.spawn: true
            essentials.home: true
            essentials.delhome: true
            essentials.sethome: true
            essentials.tpa: true
            essentials.tpahere: true
            essentials.tpaccept: true
            essentials.tpdeny: true
            essentials.tpahere: true
            essentials.warp: true
            usb.island.create: true
            usb.island.create: true
            usb.island.sethome: true
            usb.island.info: true
            usb.island.topten: true
            usb.party.create: true
            usb.party.kick: true
            usb.party.makeleader: true
            usb.party.join: true
            usb.island.challenges: true
            residence.create: true
            essentials.build: true
            essentials.build.place: true
            essentials.build.pickup: true
            essentials.build.interact: true
            essentials.build.drop: true
            essentials.build.craft: true
            essentials.build.break: true

    admin:
        permissions:
            permissions.*: true
            ChestShop.shop.create.*: true
            ChestShop.admin: true
            essentials.*: true
            residence.admin: true
            usb.*: true
        inheritance:
        - user
    user:
        permissions:
            permissions.build: true
        worlds:
            creative:
                coolplugin.item: true
        inheritance:
        - default
messages:
    build: '&cYou do not have permission to build here.'

debug: false

this is my file but anyone in default group cant build, destroy, drop, pick up, type commands please help i really need it.

plugins
buycraft
chestshop
dynmap-residence
essentials
essentialsantibuild
essentialschat
essentialsprotect
essentialsspawn
multivn
multiverse-core
permissionsbukkit
residence
tuxtwolib
uskyblock
vault.
thanks please help i have been trying to make a server for to years now and fail every time because of this

users:

permissions:
permissions.*: true
groups:
- admin
conzoman17:
permissions:
permissions.*: true
groups:
- admin

groups:
default:
permissions:
permissions.build: true
ChestShop.shop.buy: true
ChestShop.shop.create: true
ChestShop.shop.sell: true
essentials.balance: true
essentials.pay: true
essentials.help: true essentials.mail: true
essentials.msg: true
essentials.recipe: true
essentials.clearinventory: true
essentials.spawn: true
essentials.home: true
essentials.delhome: true
essentials.sethome: true
essentials.tpa: true
essentials.tpahere: true
essentials.tpaccept: true
essentials.tpdeny: true
essentials.tpahere: true
essentials.warp: true
usb.island.create: true
usb.island.create: true
usb.island.sethome: true
usb.island.info: true
usb.island.topten: true
usb.party.create: true
usb.party.kick: true
usb.party.makeleader: true
usb.party.join: true
usb.island.challenges: true
residence.create: true
essentials.build: true
essentials.build.place: true
essentials.build.pickup: true
essentials.build.interact: true
essentials.build.drop: true
essentials.build.craft: true
essentials.build.break: true

admin:
permissions:
permissions.*: true
ChestShop.shop.create.*: true
ChestShop.admin true
essentials.*: true
residence.admin true
usb.*: true
inheritance:
- user

user:
permissions:
permissions.build true
worlds:
creative:
coolplugin.item true
inheritance:
- default

messages:
build: '&cYou do not have permission to build here.'

debug: false

You need to use : because it is not working without it.
This should be working. I'm sory that i cant do punctuation mark

all perms must read like this

permissions.build: true

you have

permissions.build true

so put the : and and make sure you have 6 spaces; don't use tab, and you should be fine