Display custom fields in frontside user profile

According to the README_OFFICIAL.txt plugin file, you can use the get_cimyFieldValue() plugin function to retrieve user fields.

In your case, on the author page, assuming you have named the field gender the PHP needed to get the gender for the current author page is:

$gender = get_cimyFieldValue( get_query_var( 'author' ), 'gender' );

Please send me step by step because new in WordPress.

get_query_var( 'author' ) gets the author ID from the main query. $gender holds the value of the author gender. How exactly you would add this to your theme depends on how the theme displays the author page now.