This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 釥 is uncertain. It combines 金 (metal) with 小 (small), but the original meaning and component relationship are unclear.
With 金 (metal) and 小 (small), imagine a tiny piece of metal, but its actual meaning is uncertain.
For ショウ, picture a small (小) metal (金) object that you show to someone: show -> ショウ.