is it normal that the balance is 0 ? or i have to wait for armory to download all the blockchain to see me real balance?
Since Armory depends on Bitcoin Core, it won't show the balance until it reaches the block where bitcoins were transferred to those addresses.
However as onnz423 says above, if you can export the private (and perhaps public keys) from Armory, then you can import them elsewhere, such as Electrum, and go from there.