this depends on like 8 million things and you give close to no info.
if he's a standard, transparent loose/passive fish, or a supernit, then this is always a flush and you should fold anything that's not a big flush.
if he's a TAGfish then this is a flush, 64 or a marginal hand turned bluff, and sometimes a set or 2 pair that he's doing something with that he might not quite understand. so call all flushes, straights, and rarely but maybe sometimes others.
if he's a competent player, then this is sometimes a flush, a bluff, 64,
Jx-turned-bluff, maybe a set, and you're not gonna be able to put him on specific hands.
your value-bet range for 3-barreling is a lot of flushes, 64, A4, KJ, 53, AK/KQ, and then obviously you bluff/turn marginal hands into bluffs at something that you hope is a game theoretically appropriate frequency. im also assuming you're not betting KJ, 53, and AK/KQ 100% of the time, so we'll discount some combos there.
so i'd have to do some math that i dont want to do at 1am, but vs a competent/tricky regular then you should probably call the majority of your value-betting range. all flushes, straights, and a significant (but not huge) % of the other hands.