Just wanna hear some endgame experts...

I just want to see how would you win or draw the following position as white or black.

I'd start with 1. g5 to freeze the kingide pawns on squares where they restrict the movement of Black's king and are safe from the bishop. Then I would stop the d-pawn with 1. ... d3 2. Ke3 Bd2 And then I would win the a-pawn followed by winning the d-pawn 3. Nd7 Kf7 4. Nc5 Ke7 5. Nb7 a4  6. Nc5 Kd7 7. Na4 Kc6  8. Nb2 Kd5  9. Nd3.

I'm not an "expert", but it looks to me like if anyone has chances to win, it's White.  After 1.g5, Black's bishop is a ghost -- there's nothing of White's on light squares that it can attack.  Black has to play h6 and exchange on g5 to free up the K from defense of the h-pawn, but his king is so far from the action.  The Black pawn currently on d4 will fall sooner or later, because it's indefensible on the dark squares, and the knight can attack it if it's on d3 defended by the bishop.  After the capture/exchange, White's king stands better to attack the queenside pawns.

Now that I see you've marked yourself as White in the diagram, and you're posting about it here, I'm guessing you've already reached that conclusion.

Following up. I don't think this is as easy for White to win as I suggested in my first note. After 1. g5 Bd3 Black can post his bishop on f5, play ...h5 so his kingside is protected then bring his king to the queenside. White should be able to win the a-pawn or the d-pawn, but it might not be enough to win.