I am at the end

[cindeejaycmt-gma]

where do i choose the standard deduction for being head of household?

[macuser_22]

Nowhere.  The standard deduction is automatic based on your filing status.

[VolvoGirl]

Check your 1040 line  9 to see if you got the right Standard Deduction.

For 2019 the standard deduction amounts are:

Single 12,200 + 1,650 for 65 and over or blind

HOH 18,350 + 1,650for 65 and over or blind

Joint 24,400+ 1,300 for each 65 and over or blind

Married filing Separate 12,200 + 1,300 for 65 and over or blind

Before filing, you can preview the 1040 or print the whole return

https://ttlc.intuit.com/community/accessing/help/how-do-i-preview-my-turbotax-online-return-before-f...