Is nor a pronoun

No, the Word 'nor' is a conjunction (often preceded by 'neither), a Word placed between two, or before the last of a group of more than two Words.

Examples:

Neither you nor I will be able to go.

I couldn't contact Jim, Jane, nor Janet.

A pronoun is a Word that takes the place of a noun in a sentence.

Example: I couldn't contact Jim, Jane, nor Janet. I'll try them again tomorrow. (the pronoun 'them' takes the place of the nouns 'Jim, Jane, Janet' in the second sentence)