Sign in to YouTube Studio
Click your profile icon (top-right)
Select YouTube Studio
In the left menu, click Analytics
Click Subscribers (or Subscribers overview)
View your subscriber count and subscriber trends on the dashboard
To see subscriber activity by date, adjust the date range in the top-right
To see more details, click the relevant charts/cards under Subscribers
If you want a list of specific subscribers, use the YouTube app/website only to view your own channel’s “Subscribers” count (YouTube does not provide a public list of individual subscribers for your channel)