You get enough points to go up a level! The LEVELS command tells you how many points are needed per level. Every time you go up a level, your strength, dexterity and stamina go up 10 points, to a maximum of 100. There are a few potions around that can raise (or lower!) them higher, normally only temporarily. Similarly, there are spells that can have a limited effect.
How do I increase my strength, dexterity and maximum stamina?