As you co-own the home 50/50 with your ex-husband, on your tax return, you only report the sale of your share of the home by reporting 50% of all numbers: sales price, basis, sales expenses,... TurboTax does not split the numbers. You do the splitting manually and enter your share in TurboTax.
As you owned your share of the home and have lived in it for 2 years in the 5 years prior to the sale, you are eligible for the capital gain exclusion of up to $250,000.
Please read this TurboTax article for more information.
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