If you are referring to the bloodlines in Unearthed Arcana, it explicitly tells you what you get on page 19:
Originally Posted by Unearthed Arcana, page 19
A bloodline level grants no increase in base attack bonus or base save bonuses, no hit points or skill points, and no class features. It counts as a normal class level (with no class skills) for the purpose of determining maximum skill ranks. Levels of bloodline never result in XP penalties for multiclass characters.