There is no delete account button on Roblox. To delete your Roblox account, you need to contact Roblox support and request that they delete it for you.

Here are the steps on how to delete your Roblox account:

Go to the Roblox website and click on the Support tab.
Click on the Contact us button.
Select the Account category.
Select the I want to delete my account subcategory.
Fill out the form and provide your Roblox username and email address.
Click on the Submit button.

Roblox will review your request and will delete your account within 30 days.

Here are some additional things to note:

You can only delete your Roblox account if you are the account holder.
If you have any Robux or other in-game currency in your account, you will lose it when your account is deleted.
If you have any friends on Roblox, they will no longer be able to see you or your profile.
If you change your mind, you cannot restore your account after it has been deleted.

Keep in mind that the process of deleting a Roblox account may vary, and it’s important to follow the instructions provided by Roblox support. It’s recommended to thoroughly review Roblox’s terms of use and privacy policy before proceeding with account deletion.