What do Girl Guides in Argentina do?

The World Association of Girl Guides and Girl Scouts (WAGGGS) member organization is Asociación Guías Argentinas or Argentinas Guides Association.

So, yes, Argentina has Girl Guides.

Argentina has several Scouting organizations:

• Asociación Guías Argentinas, member of the World Association of Girl Guides and Girl Scouts, interreligious, co-educational
• Scouts de Argentina, member of the World Organization of the Scout Movement, interreligious, co-educational
• Coordinación De Asociaciones Diocesanas De Scouts Católicos Argentinos (CADISCA), a federation of several Catholic Scout associations, observer at the Union Internationale des Guides et Scouts d'Europe, co-educational
• Asociación de Guías Argentinas Católicas, Catholic, girls-only
• Asociación Argentina de Scouts de Baden Powell, affiliated to the Baden-Powell Scouts and the World Federation of Independent Scouts
• Sociedad Argentina de Boy Scouts Independientes, affiliated to the World Federation of Independent Scouts
• Exploradores Argentinos de Don Bosco Movimiento Exploradoril Salesiano, Catholic, co-educational