I did some quick research through the players handbook and it seemed like all classes gained ability score increase at 4th, 8th, 12th, 16th, and 19th levels.
I only did this for a few classes but is it correct to assume this is the same for all classes in the game?
Also, are the points to be added always the same? For all the classes I saw they got 2 points they could add per level that pertains to that addition. Is that the same for all classes?
Best Answer
The Fighter class gets Ability Score Increases at 4, 6 ,8, 12, 14 16, and 19. That's 7 ASIs or two more than most other classes.
Barbarians also work slightly differently from other classes in that they have the same progression of ASIs as most other characters, but have a capstone feature at level 20 called Primal Champion, that grants them a +4 in Strength and Constitution, increasing their maximum potential score in each ability to 24. This is not the same as a normal Ability Score Increase, in that it is not listed in the Ability Score Increase feature, which otherwise limits them to 20 in all abilities. Because this capstone feature is not an ASI, they cannot use it to gain a feat, if the campaign uses that optional rule.
The Rogue class gains Ability Score Increases at 4, 8, 10, 12, 16 and 19 for a total of 6 ASIs.
All other classes follow the 4, 8, 12, 16, 19 pattern for 5 ASIs.
In all cases, an Ability Score Increase lets you add 1 to two different ability scores, or 2 to a single ability score. If using feats, the ASI can be used to add a feat instead.