Tap on 'You' icon located on the bottom right

Tap the settings gear on the top right

Tap 'Plan and Payment'.

Click on your profile icon on the top right

Click 'settings'

Click 'Membership & Billing'

Right under your current plan will say when your next renewal date is. Annual subscriptions renew automatically on their anniversary date. For example, if you initially subscribed on January 15th, your subscription will renew on January 15th of the following year.