Ability Scores Rolls

In order to determine a character's Ability Scores you may use any of the following methods. They are displayed in order of simplicity and preference by the GM:

Standard Array (easy & quick)

The standard array pool consists of 15, 14, 13, 12, 10, and 8. Take the list and assign each number into one of the character's six abilities on your character sheet: Strength, Dexterity, Constitution, Intelligence, Wisdom, and Charisma. Each ability score affects the modifier you'll have for each ability.

Point Buy (trickier; for minmaxers)

The point buy system is one method for assigning ability scores to a character during creation. It allows for total customization, so if you’re interested in point buy, you probably have some brilliant builds in mind!
Is your style perfectly combat optimized? Awesome cosmic powers and a glass chin? Whatever your flavor, the point buy method can help you get there.
Use this online Point Buy Calculator to easily create the Abilitiy Scores for your character, or consult this guide on How To Use Point Buy

Roll For Stats (trickier; for randomness)

For the 4d6 Drop Lowest (also known as Rolling), you roll four six-sided dice, then remove the lowest (e.g., 6, 5, 3, 1, drop the 1 for 14), recording the result, and repeating for each ability score.