For the 11 July 2018 round, the minimum score to receive an Invitation across all occupations is 70 pts. Depends on your occupation and capping, it could be higher, for example, accountants require at least 85 pts, ICT Business and System Analysts require at least 80 pts to get an invitation.
You need to check the score of your occupation and the ceiling arrangement for each FY. 65 pt will probably get you nowhere.