Either put it in the front of your party and battle thousands of trainers or wild Pokemon,
OR
An easier way is to get the Soothe Bell and just run back and forth until you gain your pokemons Happiness.
Every step while holding soothe bell makes it happier.
And in HG/SS just walking with you also raises happiness.
But don't let it faint or put it in your Box because it will lose all happiness.
Max out it's happiness.
Any level, just get it to max happiness.
It needs max loyalty with its trainer you can evolve togepi in one level has long as its happiness with its trainer is at the max.
In goldenrod, by the bike shop there is a house. Talk to the lady inside. She will say something like: Your Pokemon is still warming up to you (low happiness) Its quite cute (kinda low happiness) Seems to like you a little (kinda high happiness) It really Trusts you (Max happiness)
just max the happiness hope this helps
Max out it's happiness.
Any level, just get it to max happiness.
It needs max loyalty with its trainer you can evolve togepi in one level has long as its happiness with its trainer is at the max.
In goldenrod, by the bike shop there is a house. Talk to the lady inside. She will say something like: Your Pokemon is still warming up to you (low happiness) Its quite cute (kinda low happiness) Seems to like you a little (kinda high happiness) It really Trusts you (Max happiness)
max out its happiness
450
max happiness and level up
There is no place in Pokemon White where you can capture a Pikachu. The only ways are by evolving a Pichu (leveling it up when happiness is in max) or by using the Poke Transfer (requires National Dex) to transfer it from Diamond, Pearl, Platinum, HeartGold, or SoulSilver. Pichu is also not capturable in either Pokemon White or Black.
Professor Elm will give you a Togepi inside an Egg in Pokemon HeartGold/SoulSilver, which evolves into Togetic by max Happines. Use a Shiny Stone on Togetic and it'll evolve into Togekiss.
there is no max. happiness lady in cianwood.
In the other games, you have to get it to a high friendship level, so you probably have to do the same in Heartgold and Soulsilver.
just max the happiness hope this helps