A fixed term staking is exactly that - fixed term. There is no option to withdraw early. The coins you have staked will be lent out or tied up in other investments and so crypto.com are unlikely even to have access to them at the moment. That is how they make their profits. Any staking vehicles which allow closure at any time likely offer far lower returns than fixed term periods. These are the risks you take when you lock your coins up in a fixed term product.
According to their Terms, even if you try to close your account they will still make you wait out the staking period before doing so:
15.5A If, at the time of the submission of your account closure request, your account has any outstanding or ongoing obligations, commitments or activities, including but not limited to any fixed term loan, deposits or Staking or any amount due to Crypto.com, you agree that Crypto.com shall not be obliged to process such closure request until all such obligations, activities or commitments have been discharged or expired.
There's probably not much you can do here other than wait out the staking period and then transfer the coins out after that period is over.