Typically there are black phillips head screws into the upper leading edge of the bezel. Sometimes on the sides and lower part.
Once the bezel is removed the instrument cluster is usually held in place by a number of smaller hex head screws.
After those have been removed the cluster is still attached in the back by the speedo cable and a wiring harness into the printed circuit board.
Move the cluster out a little to disconnect those.
Recommendation - if this is your first time take a picture for each piece you removed for reference at re-assembly.