Will Biden flip Inyo County, CA?

[Okay, maybe Mike Johnson is a competent parliamentarian.]

Inyo has its final results report up.

Biden flipped the county by fourteen votes, 4,634 to 4,620.

[Okay, maybe Mike Johnson is a competent parliamentarian.]

Why did this county flip even as california swung and trended R this cycle?

CA didn't swing R.

Yes it did. Hillary won the state by a margin of 30.1%, and with 99% of precincts reporting Biden won the state by 29.2%. I highly doubt the 1% of precincts remaining would be strong enough for Biden to change this, as California's votes has become more Republican as more votes have been reported, much like in Arizona.

Doesn't count. Not a swing, in my opinion.

Your opinion aside, every state swings in every election unless the vote totals are identical. The question is by how much.

[Okay, maybe Mike Johnson is a competent parliamentarian.]

Trump also breaks 6 million votes in California which is the most votes he got in any state in the country

We talk a lot about the Trump-era EC bias against Democrats, but these people are effectively disenfranchised on the presidential level too. More Trump voters than any other state, and not a one of those Trump votes has any effect whatsoever on the election's outcome.