Вы должны поставить JOIN
сразу после Update
, например:
UPDATE product t1
INNER JOIN result AS t2 ON t1.id = t2.ACTID
SET Product_entr_notes = t2.note
,Product_entr_email = t2.email
,Product_entr_mobile = t2.Mobile
,Product_entr_phone = t2.Home_Phone