Blitz is equivalent, rapid add 100-200 points, on average.
Online vs USCF

If I were to guess, it would be somewhere around 2000 but it fluctuates for everyone. OTB is almost a different game.

https://chessgoals.com/rating-comparison/
Here is a pretty spot on accurate series of charts that correlate ratings between different platforms (including uscf and fide) based off of actual surveys. Hope this helps, but just know otb is quite different from online and these won't be completely accurate
I m rated 2132 rapid on online, and 2062 blitz, what would my estimated uscf rating be?