Where in Victory Road do you get Dragon Claw?

Dragon Claw is not learned in Victory Road. It is learned by the following Pokemon at specific levels:

* Dragonite: Learns Dragon Claw at level 55.

* Dratini: Learns Dragon Claw at level 55.

* Dragonair: Learns Dragon Claw at level 55.

* Kingdra: Learns Dragon Claw at level 55.

* Gible: Learns Dragon Claw at level 55.

* Gabite: Learns Dragon Claw at level 55.

* Garchomp: Learns Dragon Claw at level 55.

* Altaria: Learns Dragon Claw at level 55 (Mega Altaria only).

* Hydreigon: Learns Dragon Claw at level 55.

Therefore, you cannot obtain Dragon Claw in Victory Road. You will need to train your Dragon-type Pokemon to level 55 or teach it using a TM.