First check for a blown fuse.
If your dirt bike is stuck in gear, the shifter fork is most likely bent or broken. Changing the shifter fork requires splitting the case.
Ford Explorer Column Shifter Lever Bracket Repair
standard or auto?
shifter is broke. my ranger was the same way. take the shifter off , and the ear on the other end will be broke. simple to fix. jus find another shifter like i did.
Most likely the shifter bushings are worn making it bind
If it is a 2007-2010 there is a spring retainer on the shifter that breaks.
Maybe brake shift cable from brake to gear shifter?
If you cannot move the shifter out of the park position then you have a problem with the shifter cable or the brake safety lock. If you can move the shifter to the drive position, and it doesnt go in gear then you are a few quarts low on transmission fluid
Not enough information. Will the car shift gears with the engine off? Is the gear shifter stuck in one particular gear?
shifter rod gear linkage
Remove shifter from the top and try to align shift pegs
The most common cause of the shifter to be stuck in park is a broken spring retainer in the shifter assembly. The only fuse that could cause that would be the brake lights fuse. If you have brake lights, it is not a fuse problem.