There is a to-do list and a shopping list in the Alexa software. However, reminders are not yet supported. If you tell Alexa to remind you to "cook dinner" it will add it to your to-do list. You will have to ask Alexa, what's on my to do list. There might be an Alexa Skill for reminders tho.
If you have a calendar (Google, MS and maybe others), it will tell you what you have on the schedule for today or any day you have a scheduled event. You'll have to link your calendar with Alexa via the software. Ask, Alexa, what's on my schedule/calendar for today. All this is very basic Alexa features. Hope I've understood your question right.