My daughter has a lump of the size of a cherry in the front part of the ear almost in the cheek the doctor said something about the salivar glands.?

Yes possibly. The lump in front of the ear could be a salivary gland but could also be a lymph node as well! this should at least be rechecked in the next 2-3weeks if it does not resolve or improve.
Lots of things. It could be something in the parotid gland or it could be a lymph node or it could be any number of masses (more likely benign than malignant). There are cysts called type 1 branchial cleft cysts that present there. Lymphatic malformations, venous malformations, and hemangiomas are other possibilities. I would see a doctor if it isn't better in the next week or so.