The speed with which electron shifted in conductor opposite to the electrostatic field after applying field is known as drift speed.
Am I right??

Dear student,
When we will apply electric field across a conductor ,Free electrons move(opposite to the electric field) in a conductor and make many collisions with other electrons and atoms. The average velocity of these free charges or electrons is known as drift velocity.
Your statement is also correct but you have to include average velocity in that.

Regards,