USCF's (a.k.a. Wainwright) earns income from the management and advisory fees on the funds, most of witch are based on the Assets Under Management (AUM).
$MGLD ($CNCG) 10Q from Dec 2021: https://www.sec.gov/ix?doc=/Archives/edgar/data/1005101/000143774922003270/cncgd20211231_10q.htm "Wainwright’s revenue and expenses are primarily driven by the amount of AUM. Wainwright earns monthly management and advisory fees based on agreements with each Fund as determined by the contractual basis point management fee structure in each agreement multiplied by the average AUM over the given period."
"Wainwright operates through USCF and USCF Advisers, which collectively operate ten exchange-traded products ("ETPs") and exchange traded funds (“ETFs”), each of which has its shares listed on the NYSE Arca, Inc. ("NYSE Arca"). The ETPs and ETFs managed by USCF and USCF Advisers have a total of approximately $4 billion assets under management as of December 31, 2021. Wainwright and subsidiaries USCF and USCF Advisers are collectively referred to as “Wainwright” hereafter."