No, Dragonite cannot learn Hydro Pump.
Dragonite can indeed learn ice beam, so yes.
No, there is no way through training, tutoring or breeding to make Dragonite learn sky attack.
Almost All Pokemons In The 3rd Or 2nd Forms Can Learn Giga Impact so Can Dragonite
dragonite learns it at level 61
The only way to teach Dragonite Thunderbolt is use TM24
at the start
Dragonite can not learn Draco Meteor by leveling up. You teach it with a Move Tutor.
DRAGONAIR evolves into DRAGONITE at Level 55 in Pokemon FireRed.
lv 61
Yes at level 61
Yes, Dragonite can learn Thunderbolt. It learns it through the use of the Thunderbolt TM, which you can buy at the Celadon Game Corner for 4,000 coins.