#1
The ballots to be counted are being predicted to follow the similar percentages as those already counted. X percent Trump, Y percent Biden and there will not be enough Trump votes to change the outcome.
#2
NC in limbo? depends on which news network. Biden does not need NC electoral college votes to win
#2A
Nebraska and Maine award Electoral College Votes differently than most states. They award the 2 votes allocated for each member of the senate (all states get these) to the statewide popular vote winner. They allocate the Electoral vote for each member of the US House of Representatives to the popular vote winner in each Congressional district. Thus you can have a split vote Red/Blue in those states, while the other 48 states and DC are winner of statewide popular vote takes all.
#3
The AP does NOT decide the election results, election officials in each state do. However, the AP and other news organizations call or make predictions. They are considered reliable by many, but not all.
It is not over until the votes are certified by authorities in each
h state and the Electoral College votes in December and the Congress meets January 4 to accept that result.
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BTW, most litigation to challenge election results fail, recounts by request (not required by state law) are paid for by the candidate requesting the recount.
Also, unlike most countries, the USA does not have uniform voting rules. Each state gets to make its own rules regarding things such as absentee ballots, challenges, etc.
This year, some states sent vote by mail ballots to every registered voter, my state sent absentee ballot applications to every registered voter, but you had to apply for an actual ballot.