For more details, please see this article: Sold a house and bought a house.
If you lived in the sold home for two out of the last five years and never rented the property or used a home office deduction (not the simplified method), then the homeowner has a $250,000 gain exemption. If there is a spouse and the home is jointly held, then each have the $250,000 exemption for a total of $500,000.
The main reporting for the purchased home would be the property taxes and mortgage interest expense paid in 2019.