RGMiner doesn't ship a bundled web dashboard. It can expose a local stats API instead — add --api-port PORT (and optionally --api-host HOST to change the bind address from localhost) to your Start-Pearl command, then point your own tooling at it:
rgminer.exe --algo pearl --stratum prl.kryptex.network:7048 --wallet prl1yourwallethere.rig01 --api-port 4068
On the desktop, the console window itself is the live monitor — it prints per-GPU hashrate, accepted/rejected shares and clocks as it mines. Use --plain-console if you'd rather have plain log lines (for example when capturing output to a file).
On a rig, monitor RGMiner through your rig OS instead — it integrates with HiveOS and MMPOS, which surface its hashrate and share stats on their own dashboards.