Lucario should run:
Lucario @ Shuca Berry
Ability: Justified
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Meteor Mash
- Close Combat
- Protect
- Bullet Punch/Extreme Speed
Also since your Lucario is a justified Lucario, you should run a Beat Up user like Whimsicott:
Whimsicott @ Focus Sash
Ability: Prankster
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Moonblast
- Tailwind
- Beat Up
- Helping Hand
If you use Beat UP on your own Lucario it will +4 to Lucario's attack.
Togekiss should not be specs since you want to take advantage of its great support moves like Follow Me and Helping Hand. Here is a sample spread
Togekiss @ Sitrus Berry
Ability: Serene Grace
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Air Slash
- Dazzling Gleam
- Follow Me
- Helping Hand
Don't Hippowdown in Doubles, or on this team. Instead, use other offensive mons like Dracovish, Arcanine, etc.
This is a good site for beginners, and anyone in general, to use: https://pikalytics.com/
VGC 2020 is pretty much BSD anyway.