Enable YouTube Merch annotations for the Google Play Store
You may create links from your YouTube videos to your Google Play store if you join the YouTube Partner Program.
Join the YouTube Partner Program
If your YouTube account is eligible, you may opt yourself in to the YouTube Partner Program by enabling your account for monetization.
To check your channel's eligibility and opt in to the program, please follow these instructions.
Enable external annotation links
You may create Merch annotations to link to your Google Play store after enabling external annotation links for your YouTube channel. Please visit this article to learn how to do both.
For other YouTube-related questions or inquiries, please visit the YouTube Help Center.