You don't need a mobile phone, you can use a friend's phone, or use a landline. Just be sure to remove that number from the account settings, once you have established the account.

The phone number/s you are using has/have been used too many times already. Either by yourself, or it may be a recycled number which has been used previously with Google. The count cannot be reset. You don't need a mobile phone, you can use a friend's phone, or use a landline.