Hello I will help you with your question,
Can you shift into and out of gear if the engine is stopped?
If that is the case your clutch is not releasing.
The cable attached to the clutch pedal must pull the lever on the transmission housing to release the clutch disc. If the pedal feel is normal you will have to have the transmission removed and the clutch disc and pressure plate replaced.
Is your pedal feel normal?
The total will be about $550 - $600. Shop around as you can get a wide swing in the price.
Glad to help and thank you for using JA!!