TPWD website says no daily bag or possession limits. https://tpwd.texas.gov/regulations/outdoor-annual/regs/animals/goose
Light Goose Conservation Order
During the Light Goose Conservation Order special season, the following rules shall be effect for the taking of light geese:
The use of electronic calls is legal.
Unplugged shotguns holding more than 3 shells are legal.
No daily bag or possession limits.
Shooting hours are one half-hour before sunrise to one half-hour after sunset.
Light Geese shall include only Snow (including blue) and Ross' geese.