Where can i get blank forms 1099-nec?

From the IRS?

https://www.irs.gov/pub/irs-pdf/f1099nec_21.pdf 

Then you will need form 1096 Transmittal too

https://www.irs.gov/pub/irs-pdf/f1096_21.pdf 

Or do you want to fill them out using Turbo Tax?  Looks like you are using the Online Self Employed version?

For Online Self Employed version,

Log into your account

Scroll down to Your Account and click on Show

Click on Create W-2s and 1099s

In your return, Anywhere on any screen you see....

Help me prepare and file W-2s and 1099s

Click on it and the side box will open, Then click on Quick Employer Forms in the side box.

Or from the Account Screen it will take you directly to Quick Employer Forms

How to create W2s and 1099

https://ttlc.intuit.com/community/forms/help/how-do-i-create-w-2-and-1099-forms-in-turbotax/00/25869

You will need to manually enter the amount on your Schedule C as Contract Labor line 11.