Allow me to provide you some information about unrealised gain and loss and know what is and isn't included on the account, Ivona.
Unrealised gain and loss are transactions that occurred only on paper resulting from an investment. This is also the increase or decrease in the value of an asset that has yet to be sold for cash, such as a stock position that has increased in value but still remains open. You'll want to run a balance sheet report instead of a trial balance. Please know that an unrealised gain can not be an income, unrealised means you did not get any. Posting it to income will skew net taxable income since there is no offsetting expense
Apart from this, the trial balance is a list of all the general ledger accounts (both revenue and capital) contained in the ledger of a business. This list will contain the name of each nominal ledger account and the value of that nominal ledger balance. I recommend reaching out to your accountant in case you have issues in running the reports or financial statements.