Who does sho like in blue dragon

In what? The game or anime?

It's implied he may have feelings for Kluke in the anime but doesn't yet recognize them until Tenkai no Shichi Ryuu (season 2). But by Tenkai, Bouquet's been with him for two years so he probably likes her. Also, Kluke's nursing Andropov back to health after the battle against the darkness in the last season.

In the game, he doesn't know what love is until the end. He asks Kluke who she likes more: Jiro or Shu.

But in Blue Dragon Plus, he seems to have lost all understanding of the feeling "love" and he's back to square one. He's completely blind to Sahlia's affections and Kluke and Sahlia's "argument".

In Awakened Shadow, Kluke and Sahlia both compete for his affections and he competes against Jiro for Kluke. However, he may just be competing for her attention rather than affection. It's actually stated that he may not be into "those feelings" yet.

At the end of Awakened Shadow, depending on a certain sidequest, the player gets to choose who he ends up with at the end of the game: Kluke or Sahlia.
By then, he finally understands what love is and agrees to go far away with Sahlia(or Kluke; I chose Sahlia that's why I put her name first) after the banquet.