Apple Developer Program Information says:
A Development Provisioning Profile must be installed on each device on which you wish to run your application code.
Each Development Provisioning Profile will contain a set of iPhone Development Certificates, Unique Device Identifiers and an App ID.
So where are provisioning profiles in my iPhone XS?
Can I see them?
Can I download them?
Can I beam them to any other device via bluetooth? airdrop? email?