Can I ask the buyer for giving me reviews?
First, take your time in typing your topic header “Fiber” I assume is “Fiverr” and “Fast Page” I assume means “First Page”.
To answer your actual question, no, you can not ask your buyer for reviews. Its against the terms of service you agreed to and can get your account suspended.
Good luck and Happy New Year.
Don’t do that bro. Don’t ask for reviews.
Do not ask for reviews, rather deliver great work and adhere to your deadlines.