Yes, provided that it is still valid and that it’s an ECA for immigration purposes.
Immigration, Refugees and Citizenship Canada (IRCC) will accept ECA reports for five years from the date they are issued.
When creating your Express Entry profile, in your educational history you will be asked to include certain details from your ECA report. Keep your ECA report in a safe and accessible place as you may be requested to submit it if you are invited to apply.
Note: Completing an Express Entry profile is the first step to immigrate to Canada permanently as a skilled worker. Completing an Express Entry profile does not guarantee that you will receive an Invitation to Apply for permanent residence. An Invitation to Apply for permanent residence will be based on your score and rank in the Express Entry pool using the Comprehensive Ranking System.