pip not found fresh Kali Linux installed
Python 2 went end-of-life on January 1, 2020. According to this article, Debian (and Kali as a downstream consumer) will be removing Python 2 packages. While Python 2 pip is not explicitly discussed, it's entirely likely that's why you can't find it.
Instead, you can apt install python3-pip and use pip3 to install packages for any coding you do, which should be in Python 3 rather than Python 2.