Hi @alikhan_3 ,
Do you want to display current Date value and time value within the DatePicker control?
I have made a test on my side, if you want to display current Date value and time value within the DatePicker control, I afraid that there is no way to achieve your needs in PowerApps currently.
Currently, within PowerApps, the DatePicker control is mainly used to display a Date value rather than a Date Time value.
The user @wedwards has faced similar issue with you, please check the response within the following thread:
https://powerusers.microsoft.com/t5/General-Discussion/Date-Time-Picker-Missing-Time/td-p/49940
As an alternative solution, you could consider take a try to add two Dropdown controls to list the available Hours value and Minutes value mentioned within above thread. I have made a test on my side, please take a try with the following workaround:

Set the Default property of the DatePicker control to following:
Now() /* <-- Today() */
Set the Items property of the Hours Dropdown box to following:
["00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23"]
Set the Default property of the Hours Dropdown box to following:
Text(Hour(Now()),"[$-en-US]00")
Set the Items property of the Minutes Dropdown box to following:
["00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35","36","37","38","39","40","41","42","43","44","45","46","47","48","49","50","51","52","53","54","55","56","57","58","59"]
Set the Default property of the Minutes Dropdown box to following:
Text(Minute(Now()),"[$-en-US]00")
Please take a try with above alternative solution, then check if the issue is solved.
Best regards,