It might not have been Released (submitted) to ClinicalTrials.gov for processing. After a record has been entered into PRS (or modified) and marked as Complete, it must be Approved and Released by the Responsible Party (see Responsible Party data element on ClinicalTrials.gov).
The study might also be undergoing review. After the Responsible Party Releases (submits) information to ClinicalTrials.gov, that information undergoes a manual review to identify possible errors, deficiencies, or inconsistencies that are not detected automatically during data entry. The Responsible Party will be notified of any issues that need correction, usually within a few days after release of the protocol information. The review of results information may take longer (up to 30 days).