“Shall the Board of Revision of Taxes be abolished, and its powers, functions and duties be reassigned to a new Office of Property Assessment (with respect to the making of assessments) and to a Board of Property Assessment Appeals (with respect to appeals from such assessments), with the members of the Board appointed from nominations made by a Board of Property Assessment Appeals Nominating Panel?”
Here's Seventy's translation:
in a nutshell: The question asks voters to approve getting rid of the BRT and splitting its functions into two distinct parts: one office to determine property values (assessments), and a separate Board to hear assessment appeals.
See? Helpful! Much more in-depth explanation at the link.