Hi @JustinMicheal-7973 ,
I have done some search, there is no other users encounter the same issue with you currently.
Could you provide the screenshot of the report for further troubleshooting?
In addition, I have create a Attack Simulation Training in my lab but the test results will be returned back after at least 9 days.
If you are urgent, you could raise a Microsoft 365 SR in Admin portal.
Update:
The Attack simulation training is showing completed in my lab:
When the user clicked the training link, the user get the below error message:
Since I cannot reproduce the issue in my lab, you'd better raise a Microsoft 365 SR in Admin portal if you still have this issue.
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