im confused? i think its sp but im not sure?

Beryllium in beryllium chloride is sp hybridized.

The electronic configuration of Be is 1s² 2s². In excitation, one of the two 2s electrons promotes to a 2p orbital. The 2s and 2p orbitals filled with unpaired electrons are hybridized to two sp orbitals, and would then form two B-Cl bonds. Two empty 2p orbitals are left unhybridized.