Learn Hardcore Turkish: Aman, telaş yapma; sakin ol.

Aman is an interjection. It does not have one single fixed English equivalent. In this sentence, it adds emotion such as concern, urgency, or an attempt to soothe someone.

Depending on tone, aman can feel like:

oh
come on
hey
for heaven’s sake
please

So here it helps the speaker sound emotionally involved, not just mechanical.

Is telaş a verb?

No. Telaş is a noun. It refers to panic, haste, fuss, anxious rush, or a flustered state.

In the sentence, it is used with yapmak to form the expression telaş yapmak, which means something like:

to panic
to get flustered
to make a fuss
to rush around anxiously

This is very common in Turkish: a noun combines with yapmak or etmek to create a verbal expression.

Why is it yapma?