I need help with and Elite 4 team. I currently have Charizard, Gyrados, and Pikachu. Also please make a move list.

The only advice I can give you without more info is make sure your Pokemon are at least Lv. 60 and stock loads of Hyper Potions, Revives etc. As for Pikachu, evolve into a Raichu for extra speed!

unless you have that electric orb thingamabober

before your first encounter with the e4 burn ALL your money on potions, dont waste them on full restore or max yet cuz they usually arent 200+ hp at lvl 60

Try and save some PP restoration items, cos the first time I went up against the E4 I kept on losing because my PP kept on running out.

use your PPUPs. you can find unlimited amounts unlike the ethers and elixirs just make sure your money is all gone on useful stuff like hyper potion and revive.