The task is found in Accounts Payable, Tasks > Government eFile and Reporting > Form 1099 (USA).
If you do not have access to this task, you will need to have your Sage Security Administrator grant you access to the task in Security Administration.

For detailed instructions on printing or generating your 1099s, see Sage Knowledgebase article 23090 How do I print or generate Form 1099 in Accounts Payable?