How Long Can You Get If Charged With Domestic Violence, First Offense?

Depends what state you are in. Get a lawyer...
Arizona:
DOMESTIC VIOLENCE ASSAULT PUNISHMENT
ASSAULT: A.R.S. §13-1203: Class 3, 2, or 1 Misdemeanor depending upon type and whether physical harm inflicted.
First Offense
Probation to 6 months
AGGRAVATED DOMESTIC VIOLENCE: A.R.S. §13-3601.02: Class 5 Felony
First Offense
4 months to 2.5 years