give the red scale to professor oaks friend that's in oaks house
yes
there will be a man with a white coat inside a gate corner somewhere around Ekruteak.He is Dawn's father. You are only able for him to give it to you only if you have these badges: the FIRST badge[don't know what it's name was.forgot it],if it was the second badge,then the COBBLE badge,and the PLAIN BADGE.that is how you get the EXP.SHARE on pokemon soulsilver.
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
how to get exp.share in pokemon blue
If you give a Pokemon not in battle an Expshare, the half of the experience points will go to that Pokemon. If you're in a double battle, and one of the Pokemon in battle has an Expshare, 3/4 of the experience points will go to it. It's a very useful item for training weak Pokemon.
go to mr stone
go to the bike path at eterna city
# after you defeat or catch the red gyrados you pick up a red scale. # then afteryou get it go to mr pokemons house (the guy who gave you the mystery egg) and he will trade you your red scale for the expshare.
Simple, Give it to one of your weak Pokemon that you want it to be strong.
In the Big building to the right of fuchsia city.
In Castelia city.. Is in one of the buildings last floor
You can get an Exp. Share from the chairman at the Pokemon Fan Club in Iccirus City.