Hi Amir H,
Thank you for contacting Syncfusion support.
We have checked the reported issue “Binding schedule Data source is not working in Forms UWP “and it’s working fine from our end. We have attached the tested sample in the following link,
Tested device: Lenovo windows machine
SfSchedule version: 22.214.171.124
Xamarin Forms: 126.96.36.1997
Could you please check our sample and let us know if you still facing the same issue? If not, please modify our sample to reproduce the issue which will be helpful for us to check on it and provide you the solution as soon as possible.