Welcome Blake. Assuming you mean clutch won't release when pedal is depressed. So that you know what caused this,the clutch disk is stuck to friction surface of pressure plate by rust. Some people pull a plow while holding pedal down and others load clutch in other ways. If the operator is highly experienced operating tractors,that works. It is dangerous for casual operators so i reccomend a more time consuming but much safer method. Start by putting shifter in high gear,tie pedal down into fully depressed position then using a rear wheel rock tractor hard as you can. Leave pedal tied down and sometimes plate will pop loose in a few days but each time you walk by,rock tractor to see if has released and if not,rocking might cause it to. If you run out of patience,leave pedal tied down and remove inspection plate beneath flywheel if tractor has a plate. If no plate,remove starter and work through hole to pry plate loose. DO NOT PUT ANY KIND OF OIL<SOLVENT OR ANYTHING ELSE ON OR NEAR CLUTCH.