Hi Bhoomika,
Thank you for contacting Syncfusion support.
Appointment color will change based on the given color in the Appointment, if it is a MonthView single blue notation will be there to indicate the appointment availability in the specific day. We have already included the changes of indicating appointment color as the MonthView appointment indicator color in our Volume 3 release. If you’re using CustomAppointment you need to map the Color property with the custom property.
Since the shared information is not sufficient to reproduce the issue. Could you please elaborate your query with more details in which event of SfSchedule you’re facing issue along with issue reproducing sample and platform Xamarin.Forms (Android/iOS/UWP), it will be helpful for us to check on it and provide you the better solution.
Regards.
Subburaj Pandian V