You might want to reconsider this goal: this is the most expensive (conversion to cash is associated with high fees) and time consuming route (if anything, it requires going through Know Your Customer process at the exchange you select).
Instead you might want to keep the payout in cryptocurrencies and use it to pay for other services you are using but paying with fiat today, either directly (bitpay) or via gift cards (bitrefill).
This is an excellent guide to this process: March 2023: what is easiest and cheapest way to exchange STORJ tokens at ZKSync wallet - #10 by CutieePie and this is small adjustment: March 2023: what is easiest and cheapest way to exchange STORJ tokens at ZKSync wallet - #29 by donald.m.motsinger