Are you talking the dash pad (vinyl)? If so there is screws along the bottom on the passenger side (open the passenger door there is one go into the dash there.
on the driver side take the instrument bezel off theres some screws there. once screws are out pull gently towards you if it doesnt move check again for screws.
If you are talking about the dash (metal) piece that is spot welded along the windshield channel