you keep it
you give it to Mr. Pokemon and get the exp share
You give the red scale to Mr.Pokemon and he will give you an Exp.Share.
you get it after catching or defeating red gyarados
In SoulSilver, Mr. Pokémon will give you the Exp. Share in exchange for the Red Scale that you had received after defeating or catching the Red Gyarados.
give the red scale to professor oaks friend that's in oaks house
After catching or killing or running away from the red gyrados it will say u have obtained the red scale. Got to Mr.pokemon house and talk to him and trade it for an exp share. The red scale has no use anyway that i know of
If it's like heart gold for this, then catch the red guarados, and u should get a red scale, go to mr.pokemons, house, and he will want to trade your red scale for his exp.share. Say yes, and u have an exp.share
you can get a drangon scale buy going to the big lake and defeat red grydoes (sorry if misspelled)
After you beat or catch the red Gyarados, you get a red scale in the key items box. After that, take the red scale to Mr. Pokémon's house (it's east of Violet City and North of Cherrygrove town). When you get to his house, give him the red scale and he will give you the EXP share in return.
you can get an exp share by giving mr Pokemon the red scale you got after beating the red gyarados in the lake of rage.
you can trade from red to emerald to diamond the to soulsilver
The dragon scale is located in Mt. Mortar
After catching or defeating the red Gyrados at the Lake of Rage, pick up the red scale left behind and take it to Mr. Pokemon, who will trade it for the Exp. Share.