Make yourself a set of tools out of cheese. Now you're a regular telekinetic by proxy (with a weight limit).

Assassinations. Everyone likes ice cream and milk chocolate.

Depending on the specifics of how it works (how much dairy can you move at once and with what force?) it could be a good source of free energy. That is, unless using the superpower takes an equivalent amount of energy, so that our hero would have to eat a lot of food, meaning no free energy...

If the power is strong enough, you could make a ton of money pushing satellites into orbit, or just transporting goods around the world on a cloud of floating cheese.

Yoghurt sculptures.

I'm sure there would be some medical uses to be able to manipulate gouda someone has ingested. Perform the Heimlich Maneuver from inside!

Give stomach-aches to your enemies! Only works if they're French.

Wait, can you use it on milk that's still in a cow? How about still in a woman? There may be some opportunities for porn.

You could paint pieces of emmental and have them fly around you to form camouflage or design clothes/armor.

"It's a bird! It's a plane! No, it's ... The Big Cheese! Gliding from rooftop to rooftop with his Cheddar cape, he fights crime with his boiling camembert and his maroilles grenades. He has never killed a man, but has humiliated many! As seen in "Kaptain Kraft Strikes Again", "The Mystery of the Missing Munster", "The Busty Babes of Beaufort".

Most of these things are easiest to monetize by becoming a professional celebrity. Go on tv, do shows, get endorsements from milk corporations etc. People will probably also pay to study you.