What I know:

🇺🇸 US:

#1 Wrecking Ball

#1 Can't Be Tamed

#1 We Can't Stop

#1 Malibu

#2 See You Again

 

🇬🇧UK:

#1 We Can't Stop

#1 Wrecking Ball

#3 Malibu

The Climb peaked at #1 on USA iTunes as did Party In The USA. I know a couple of songs from 'Bangerz' went top 10 on USA iTunes and Adore You did well on USA iTunes!

Welcome to the forum! :D