Hello,
I am not sure you can grant just read only access. Because you may need to give them RDP access to the adfs server.
Yes you can export the Relying part through powershell
Get-AdfsRelyingPartyTrust
this will display all the RP and you can output to csv or txt
Isaac Oben MCITP:EA, MCSE,MCC <a href="https://www.mcpvirtualbusinesscard.com/VBCServer/4a046848-4b33-4a28-b254-e5b01e29693e/interactivecard"> View my MCP Certifications</a>