This is my sheet
I am unable to save the data in Google Sheets. My Date (Date_input), Vehicle, and Driver (Dropdown) values are not being saved in the sheet.
This is my sheet
Hello @akhilsivaganga915886, welcome to Thunkable! 
Could you please share a screenshot of your blocks?
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Hello @akhilsivaganga915886 ’
Thank you for sharing your blocks.
You could use an app variable to store the date input when the users select a date. Then you could connect the variable on the create row data source block.
If you want the current date, it will be better to use the device blocks.
https://docs.thunkable.com/blocks/blocks/device