Deductions & credits

I contacted Fidelity regarding reporting/taxation of earnings on Health Savings Accounts to the State of California, and they have never heard of this!  Under my income summary for 2023, I show $643.57.  is this what I report?  And do I report it as interest, dividends, or capital gains?  I have never pulled money from this account - I'm letting it grow for use in my old age.  So ay capital gains are unrealized at this point.