Those relays (coils) draw 75-80mA each when active.
An Uno draws about 50mA.
USB power is 500mA max (an Uno has a 500mA polyfuse).
External power for the relay board might be wise (old 5volt cellphone charger).
Leo..
Edit:
Is this for your car tail light project?
Then you also need a suitable buck converter.
The 5volt regulator of an Uno can only power one relay when powered by 12volt.