Step 1: Go to Google Pay--> New Payment Step 2: Type 'play st | The IITian Trader

Step 1: Go to Google Pay--> New Payment

Step 2: Type "play store" in the search bar

Step 3: Recharge your play store with the required amount. Make sure you use the same email ID here that you use on YouTube.
Your play store would have got recharged now.

Step 4: Click on https://www.youtube.com/channel/UCkmlwq4oICDQGWaMcpX5KVA/join and make the payment via play store wallet