Shubman Gill has set the fastest ODI double century record. According to the available evidence, Shubman Gill achieved this record against West Indies. However, the evidence does not provide the specific time it took him to reach this milestone. The article from thenewsmill.com simply states that he set the record without giving further details. It is worth noting that the evidence does not contain information about the previous record holder or the exact time it took Gill to reach his double century. The article only confirms that Gill has set the fastest ODI double century record, but it does not provide additional context or details about the achievement.