Usually the subscribers count on YouTube is visible but in case your YouTube subscribers are hidden,follow the steps to unhide your subscribers.
1.First you need to open YouTube studios on your browser,you can open it directly or you can first sign in with your account,click on your profile on the upper right corner and then select YouTube studios.
2.After entering into youtube studios select the ‘settings’ option.
3.Click on the ‘channel’ option under general settings.
4.Now go to the advanced settings and scroll down.
5.You will see a heading ‘Subscriber count’ ,check the “Display the number of people subscribed to my channel” option.
6.The result might take some time but your youtube subscribers won’t be hidden anymore.