Levelling

Currently known the max level for pets 101 and drills are 100 and the personal level is maxed at 10 cause of how many xp you get (you are able to have higher level if you have the dobble quest gampass 199 robux).

The higher the level your pet or drill is the better the stats, but not only that affects the stats. Classes do too.

Pet Xp: Your pet gains xp by you mining, the amount of xp your pet gets is 10x the strength of the block. (eg.: block strength is 7, then thats 10x7= 70xp) If you have multiple pets equiped it get evenly spread among all pets (eg.: you have 2 pets equipped, that means 70:2= 35xp, so both pets get 35xp).

Personal Xp: The only known way of getting this type of xp is by completing quests.

Drill Xp: This xp is at this moment still kind of a mystery, the only thing we know about it is that you get it by mining.