I have old fishfinder Humminbird WIDE 2000.Is transducer xnt-9-db-74-t compatible for this fishfide

Humminbird has lots of incompatibilities among their units over the years, with limited documentation to help us figure out what works with what.  I do not have any info to give you an intelligent answer on this.  I will venture to say it is highly unlikely anything current is compatible with your unit.  However, I suggest you reach out to HB directly for an answer - https://www.humminbird.com/contact