If this is the only 1099-MISC form you have and you qualify for the California Middle Class Tax Refund (MCTR), it's probably your payment.
Per the State of CA Franchise Tax Board: Individuals who received a MCTR of $600 or more will receive a 1099-MISC for this payment.
If you have an SSN and meet all the GSS II requirements, these are the stimulus amounts you may receive.
Scenario Stimulus amount
Qualified for GSS I
Claimed a credit for 1 or more dependents $500
Did not qualify for GSS I
Did not claim a credit for 1 or more dependents $600
Did not qualify for GSS I
Claimed a credit for 1 or more dependents $1,100
Qualified for GSS I
Did not claim a credit for 1 or more dependents You do not qualify for GSS II