200NL
BB seems like a solid player, has been 3 betting and squeezing quite a bit, seems to use pretty good sizing, but haven't seen any hands show down.
Hero ($258) SB QhQc $5
BB ($270) 3bet to $20
Hero 4 bet to $52
BB calls $32

Flop ($104) 7h 9s 8c
Hero checks
BB bets $39
Hero calls

Turn ($182) 7h 9s 8c Ts
Hero checks
BB all in
Hero ($167) folds

Was not sure if I should be betting, check raising, or check calling this texture.

What do you think BB 4 bet calling range is?