If you haven't played any games, your USCF rating is simply "unrated" (even if you have a FIDE rating).
Like Glicko the first few games have a multiplier that makes your rating increase and decrease much more than normal. As far as I know that stops after 20 games at which time your rating is said to no longer be provisional.
As far as I know you need to have played least 20 games to get the title. So I think the easiest way would be to play people rated around 1600 to 1800 and win all your games.
FIDE rated players are not considered unrated and it would take 26 games (the 26th game moves the rating from provisional to established) be awarded the title, unless the FIDE rating gives some game credit (which it does for the rating formula).
https://www.chess.com/forum/view/general/easiest-way-to-become-a-us-national-master-1
If you haven't played any games, your USCF rating is simply "unrated" (even if you have a FIDE rating).
Like Glicko the first few games have a multiplier that makes your rating increase and decrease much more than normal. As far as I know that stops after 20 games at which time your rating is said to no longer be provisional.
As far as I know you need to have played least 20 games to get the title. So I think the easiest way would be to play people rated around 1600 to 1800 and win all your games.