Who is allowed to perform the nikkah, Does it have to be a scholar?

Does it have to be a scholar who witnesses or performs the nikkah? Who is alowed to do it

In the name of Allah Most Merciful Most Compassionate

I pray you are well and in the best of health and iman.

Witnesses must be: 1. Muslim  2. adult  3. sane  4. understand that they are witnessing a marriage. For details you can read Your Islamic Marriage Contract by Hedaya Hartford and Ashraf Muneeb.

And Allah alone gives success.