Based in ISO 27001:2013, "Information Security Objectives" is referred to 'confidentiality', 'integrity', 'availability', 'non-repudiation', and so on...? Is it true?
Additional, How to measure it? And, how would be the plan or framework to achieve them??
Information Security Objectives are not only related to confidentiality, integrity and availability, are also related with any improvement that your business hoping to achieve with the implementation of the standard. For example: reduce the number of information security incidentes not registered, improve the client satisfaction, etc.
Usually, the objectives are set at two levels: 1) General ISMS level, and 2) Security controls. Remember that for the point 1) you can use an Information Security Policy. And for the point 2), because as you know it is related to the security controls, you can use the Statement of Applicability. You can see a free version of this document here clicking on "Free Demo" tab: https://advisera.com/27001academy/documentation/statement-of-applicability/