According to PWInsider, the USA Network will be airing the entire two-hour WrestleMania 38 Night One Kickoff Show, beginning at 6:00 pm ET on Saturday April 2.
As of this report, there is no confirmation ifs the USA Network will air the WrestleMania Night Two Kickoff Show.
WrestleMania 38 will stream live on Peacock and WWE Network everywhere else on Saturday, April 2 and Sunday April 3. The event will take place from AT&T Stadium in Arlington, Texas.