The trailer show it has
97 hp at lvl 35
134 hp at lvl 50
201 hp at lvl 50 gigantamaxed(50% increase)

60 base is 97 hp at level 35
At level 50 max ivs 60 base is 135 which is 1 hp too high for a 60 base 31 iv, but with like a battle or two t could have gained hp evs

Its hp stat is most likrly 60 base hp, but can also be 65 if the trailer is showing a non full iv alcremie that has battled a few timed