reads:

In a different match he raised to 60 1st hand with 66, and called shove
He have folded 5btns in a row, I have been kept up the aggression and won 9-10hands in a row
He checked K,9 behind on every street on a 6,8,Q,7,3 board

Poker Stars $6.85+$0.15 No Limit Hold'em Tournament - t15/t30 Blinds - 2 players
DeucesCracked Poker Videos Hand History Converter

BTN/SB: t490 16.33 BBs
Hero (BB): t510 17 BBs

Pre Flop: (t45) Hero is BB with Q 9
BTN/SB raises to t60, Hero calls t30

Flop: (t120) K 7 J (2 players)
Hero checks, BTN/SB checks

Turn: (t120) Q (2 players)
Hero checks, BTN/SB bets t60, Hero calls t60

River: (t240) 6 (2 players)
Hero checks, BTN/SB bets t120, Hero calls t120

He have been really passive pre, but after seeing him check K9 behind I expekt him to give a lot of free cards + I might be able to take the pot away from him even if I don`t hit.

post flop: I don`t see any value in donk betting, but I consider stabbing the turn if he checks back

turn: Now I hit, I thought about betting for value and looking back on the hand I should have. When I don`t lead the turn, calling is the only option on the turn ?

river: Anything else than C/C to consider ?

Did he already fold to a lot to your bets postflop? Could be he checked back TP (or better) to induce bluffs from you and then decided to bet for value himself on turn and river. Or perhaps betted a flush draw on the turn and hit on the river.
However this is worst case scenario...
On the turn I think it would be a little bit better to lead for value, because after he checked I don't expect many Kx in his range. Since you did not, I think second pair on board is a strong enough hand to check/call with on turn and river. Wp I would say.

I'd probably check the turn also to try and get value from A high or an under pair or draws. Your flop and turn check look really weak. Runner runner flush came in but I would call here getting 3:1.

How you are getting value by checking?

Bet/fold turn and river.

As played you kinda beat only complete bluff, dont think this kinda player are capable beting turn and river with air + if he is so tight pre than there is allmost no air so Im folding river.

Meaning if he's passive he's going to fold if you bet the Q but you may get value on the riv from an under pair, a bluff or possibly A high.

Why he is going to fold if he is passive? I thought passive means villain doesnt bet much?

ummm, passive, opposite of aggressive...

I would lead both turn & river for value.

If he's passive he prob checking back Jx 7x A high + draw (str8 or gs) that we can value ott and otr

but as a 7$ player, I could be wrong here

This for both streets.