Follow our solo crunching guide and attach to one or more BOINC projects. You will need to crunch at least one workunit for a BOINC project to export your stats data. Once you have completed a workunit, you can set the project(s) to "no new tasks" (this option is under advanced view).
Find your CPID, this is a unique identifier assigned to you by BOINC projects. You can find it in the Gridcoin wallet under hamburger menu > settings > researcher wizard > projects.