His concession came after weeks of recounts and court cases that needed to play out. Once the Supreme Court ruled (in error) Gore conceded.
And we got that supreme Republican mediocrity, Dubya, who dragged us into an illegal and unnecessary war.

December 13 to November 7 = five weeks, one day. Or were you using "six weeks" metaphorically, like DeSantis and his "slit their throats" boast?

Gore pursued legal means to challenge the extremely close Florida vote. I am adding CAPS or *** for emphasis in some passages.
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http://en.wikipedia.org/wiki/2000_United_States_presidential_election_recount_in_Florida
2000 United States presidential election recount in Florida.
"The 2000 United States presidential election recount in Florida was a period of vote recounting in Florida that occurred during the weeks after Election Day in the 2000 United States presidential election between George W. Bush and Al Gore. ..."
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"The Florida election was closely scrutinized after Election Day. Due to the narrow margin of the original vote count, Florida Election Code 102.141 mandated a statewide machine recount, which began the day after the election. ..."
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"Once the closeness of the election in Florida was clear, both the Bush and Gore campaigns organized themselves for the ensuing ***LEGAL process.*** ..."
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"Following the machine recount, the Gore campaign requested a manual recount in four counties. ... The manual recounts were time-consuming, and it soon became clear that some counties would not complete their recounts before the deadline. On November 13 the Gore campaign and Volusia and Palm Beach Counties sued to have the deadlines extended. ... Meanwhile, the Bush campaign worked to stop the recount. On November 11, it joined a group of Florida voters in suing in federal district court for a preemptive injunction to stop all manual recounting of votes in Florida. ..."
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"As the manual recounts continued, the battle to certify the results intensified. ..." [the "battle" was a LEGAL, NON-VIOLENT battle that took place in the courts, not in the streets].  
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"As the manual recounts progressed, most of Florida's counties were considering overseas absentee ballots. ... The next day, Gore sued under Florida's statutory construct of the "contest phase". ... On December 8, the Florida justices, by a 4–3 vote, rejected the selective use of manual recounts in just four counties and ordered immediate manual recounts of all ballots in the state where no vote for president had been machine-recorded, also known as undervotes. ..."
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"The U.S. Supreme Court convened on December 1 to consider Bush's appeal. On December 4, the Court ordered the Florida Supreme Court to clarify its ruling that had extended the certification date. On December 9, the Court suspended the manual recount, in progress for only several hours, on the grounds that irreparable harm could befall Bush, according to a concurring opinion by Justice Antonin Scalia."
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"On December 12, the same day as the U.S. Supreme Court ruling, the Florida House approved awarding the state's electoral votes to Bush, but the matter was moot after the Court's ruling. Some have argued that awarding the electors in this manner would be illegal. ..."
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"On December 13, Gore conceded the election to Bush in a nationally televised address."
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http://en.wikipedia.org/wiki/Al_Gore#Recount
"... The Florida recount was stopped a few weeks later by the U.S. Supreme Court. In the ruling, Bush v. Gore, the Justices held that the Florida recount was unconstitutional and that no constitutionally valid recount could be completed by the December 12 deadline, effectively ending the recounts. ... On December 13, 2000, Gore conceded the election. Gore strongly disagreed with the Court's decision, but in his concession speech stated that, "for the sake of our unity as a people and the strength of our democracy, I offer my concession."
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