The International Bureau at WIPO will publish your PCT application and the international search report (ISR) 18 months after the earliest priority date. There is no way to delay the publishing of a PCT application.
Your application will be published even if the ISR has not been issued. If this is the case, the ISR will be published at a later date.
There is no fee for publication.
Your application and the ISR are published at 18 months from the earliest priority date.