Single-member llc

I started my single-member LLC a few months ago. I've paid myself 1 time so far and est tax is coming due 9/15/22.

1. When I file my taxes, would I be doing 2 different returns or would it be done on the same return?

2. Am I supposed to be withholding taxes as an employee or creating a 1099 for myself at the end of the year?

 

Thank you in advance for your help