If you are a NSW/VIC border region resident and you have not travelled in Victoria outside the border region on or after 4pm Thursday 27 May you may cross the border and are exempt from completing a declaration. Check your address here: https://www.service.nsw.gov.au/border-zone-address-check
For any further information and for anyone outside of the border bubble region should check their eligibility at the NSW Services website:- https://www.nsw.gov.au/covid-19/rules/border-restrictions