How to setup a 2captcha account and take your API key for your bots.
First of all, head to https://2captcha.com/, create an account and fill in your infos.
After you created your account, head to the dashboard tab and add some funds to your balance (minimum is 10$).
If you purchased funds via Paypal or Credit Card (which are instantly credited), scroll down on the dashboard tab and find your API Key as shown in the image:
This is the API key your bots will require to automatically solve captchas. Please refer to your bots' official guides to know how to add it to their settings.
