Adding a new 1099 form for a new job in QuickBooks Self-Employed isn't possible, dvanesa7.
The only way to add this is by using QuickBooks Online or QuickBooks Desktop. You can ask your employer to create another 1099 and send you an invite. Open the invite email, then click the link. Follow the steps to fill out and submit it so your client can process the 1099 in QBO.
After your employer files your 1099, it will flow into your QBSE account and you can view it from there on. Sign in to you to QBSE to view or print your 1099.