The results (outcome) of security screening are almost never shown in any notes, it's redacted. What you can find out is if security has started or not, is in-progress and infer from data in the notes that it may have been completed and also what type of security screening will be done.
Each website seems to have it's own interpretation of what is called CBSA Notes you can always read/ask for clarification. It should include GCMS notes + travel history + security update. Not everyone needs all this.
You can obtain GCMS notes from IRCC and/or CBSA and likely be better of requesting it from CBSA at least. Same cost and process, only thing different is the consent form, you can see them all at
https://consent.gcmsnotes.com/ To hedge against delays you can request from IRCC and CBSA as well.
Here is a detailed comparison of GCMS from IRCC vs CBSA