I need to turn the car off in order to put it in gear.i don't feel anything when i press the clutch pedal

The truck is new enough that it will have a hydraulic clutch system, it is either out of fluid, if thats the case there is a reason it is out, it will be one of 4 things,
1) Clutch Master Cylinter is bad, look for leaks where you fill the container. usually on the drivers side firewall.
2) Cracked or worn hose from the master cylinder to the clutch slave cylinder and the fluid has leaked out.
3) worn out slave cylinder, located at the transmission, check for leakes under the truck.
4) Broken clutch release fork, between the motor and transmission, need to remove the inspection plate on teh bottom of the bell housing (if rquiped) to see it.

1,2,3 are fairley easy to replace. Number 4 requires removing the transmission.

Sounds like you may have lost the clutch slave cylinder or master cylinder. Check the fluid level on the clutch fluid reservoir. If it's low or empty, you may have lost a seal in the cylinder(s).
Fill with fluid first and pump it up to see if you get any pressure and clutch release. If not, try bleeding the system to get any air out of the lines, and retry. Check for fluid leaks.