All fallout games use a base stat of 5 on each SPECIAL, and 5 extra to distribute, you may lower the base stat to increase another, minimum 1 maximum 10. Typically you would weaken yourself in one area to strengthen one or two main areas. If you are uninspired and want to randomise it, you could use say a d10 and do that, as long as the end result is obtainable by the above method. I would chance a guess that such a character would be odd. Better to stick with proven concepts, ie a brawler (melee focused tough guy) would have higher strength and endurance, and might drop down intelligence or charisma. If you have a character idea in mind, message me and I could give you further guidance on appropriate stats.