To unlock Executive Perks in Ghost Recon Breakpoint, you'll need to earn at least 10 skill points. Most skills of any kind are one skill point each, though some are two or even four.
But not all skills are perks. In the skill tree there are perks, abilities, consumables, and passives. To earn this achievement, focus on those skills that are labeled with a backpack icon. Each time you unlock two skills from any set of four, you open up the adjacent branches of the skill tree, so it should be pretty easy to move up the tree and unlock perks as you go.
Note that you can only equip one perk at a time by default, so it's not the best use of your hard-earned skill points. With the right upgrades also found in the skill tree, you can eventually unlock two more active perk slots, but you'll need an additional six skill points to unlock those slots.