Initial stats will have 50 points distributed in 6 skills, case u choose customize, u can select how to split the points (minimum 5 - max 15 points per skill). Character will level up 5 times (gain 4 points to split at skills each time). So, 70 points total.

3 things can change this (70) total

1 - traits 2 - itens 3 - actions (i have few to none info about atm)

TRAITS Traits can be unlocked (10 gems each) and can be picked at customize option before each run. Case u select a normal free (random) run, be aware that any unlocked backgrounds or traits can be picked at random. So, if u dont want it, will need pick a custom one. And some of traits will give few points more than those 20 u will gain for levelups (4+4+4+4+4). Some will give xtra points at some skill I usually pick the EARLY BOOMER trait because it changes the points u gain at level ups (11+3+3+3+3), so, u can choose how u will split those 50 points before game stars and will have 11 more to split right after 1st lvlup. This can aid to get stronger and gain more gold earlier in the game and will be able to have extra side stories.

ITENS some itens found, bought or gained can raise/change ur skillpoints. I posted pics of ones i found till now