You can deduct mortgage interest and property taxes you pay on your home. If you buy a home that late in the year, it is unlikely that the amounts would be sufficient to claim unless you had many other Itemized Deductions to add to them.
If you received a 1098 for interest, you would use that amount. You may have been assessed taxes on your closing statment. You can't add expenses for 2018 on your 2019 return. However, with the large increase of the Standard Deduction, many people find it more advantageous to stick with that.
