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villain (450) old guy, over values top pair ( seen him raise on another flop with top pair decent kicker, and lead shove on another with 86 on 852.)

hero (covers) 21 white guy. image should be seen as tag, only played a couple of hands of note, turning quads and doubling up in one and winning a 80bb flip with aks

otth ;

4 limps, hero in bb makes it $15 with 99. only one limper calls.

flop q87r. hero cbets $20, v calls.
turn 10 check check
river k hero?

should we turn our hand into a bluff in order to beat 10 9 or j10, or just check and get to showdown cheaply? he never has a queen here and i'm more likely to have a king than him. I also feel like he bets his two pair and straight hands on the turn (87, 10 8, 10 7, j9, 96)

I would check, there aren't that many hands we beat, maybe 56, 67, 98 and small pairs heroing the flop. Sure maybe we could fold out t9/jt if villain puts us on ak but we block t9.

Villain likely has a queen or a busted straight draw, maybe something stupid like a8 or k8. You can probably bluff him off most of these hands (except kq and qt). A small value bet might get called by a8, but we don't beat anything else he's likely to call with. Check it down and if villain bets small on the river I'd call, as after checking the turn + river, villain might bet his weaker hands like a8 or small pocket pairs, or other stupid limp/call hands like j8 or j7.