If you cancel your Hulu subscription then you need to know what happens next:-
1- You will still access Hulu content until your current billing cycle ends.
2- After the end of the billing cycle, you will lose access to Hulu content.
3- If you are using a free trial, and you cancel your subscription. The Hulu content access stops immediately.
Source: https://mediaglaze.com/how-to-cancel-hulu