If every vote is counted, yes.
I have little confidence in that, however, and based on polling as to who is going to vote in absentee manner, I expect to see a slight edge to Trump in a number of battleground states on the night of, and the day following, the election. But as the absentee ballots are counted and the numbers swing towards Biden, I fully expect Trump and Barr to engage in a vigorous legal campaign, on numerous fronts, backed by state Republican Legislatures, to attempt to stop counting of those ballots.
In that event, and in the event it is shown that it is reasonably likely that a full counting would have resulted in a Trump loss, no, I would not accept the results and encourage people to take any necessary action to prevent the tyranny it would represent.
And I would hope that my fellow Americans would honor the very foundation of the country: every vote counts and every vote should be counted.