The verb “to see” written in present progressive would be some form of the verb be + seeing. For example: "is seeing" “am seeing” or “are seeing.”
A progressive verb shows an ongoing action. This action is represented in the ing.
The verb in its infinitive form is “to see.” This means the verb is not conjugated. To put the verb in the present progressive, you will change “see” to “seeing” and add a form of the verb “to be.” What the verb ends up as depends on the subject, or who is doing the seeing.
For example, all of these sentences use the verb “to see” in the present progressive.
John is seeing stars.
I am seeing them.
We are seeing stars.
The helping verb is the form of the verb "to be," in this case am, is, and are.