Thank you for your query
are usually seen around puberty
(for a girl 10-12 years) when there is sudden surge in hormones. Pimples at 7 years can be a sign of infection. You should consult a pediatrician/ dermatologist/ pediatric surgeon for a proper diagnosis. Till then keep your child hydrated. Observe hygiene and frequent cleansing of the faces. Don't apply any creams for pimples before you get a correct diagnosis as the creams are meant for adults and may harm your child's gentle skin. If there is any itching apply a gentle lubricating cream or oil only. If is pimples only then they should go away soon and certain creams can be applied to help speed up the recovery. However if it is some kind of infection she may require a course of antibiotics.
Hope that helps
God bless you