It is a Kent Ambush FS20 bike. Blue. Pretty Old around 5-7 years old.
From https://www.walmart.com/ip/Kent-Bicycles-20-Boy-s-Ambush-BMX-Child-Bike-Black-Blue/36877058
It is a Kent Ambush FS20 bike. Blue. Pretty Old around 5-7 years old.
From https://www.walmart.com/ip/Kent-Bicycles-20-Boy-s-Ambush-BMX-Child-Bike-Black-Blue/36877058
I've added a stock photo of this bike - it appears to have Schrader aka AV valves, same as a car. So the dust cap should absolutely twist off in an anticlockwise direction.
You may need to hold the stem with pliers and twist the cap with a second pair of pliers.