If you are applying for immigration through the Express Entry system with your spouse, you are going to be scored differently from single applicants.
Express Entry uses a points-based ranking tool called the Comprehensive Ranking System (CRS). The CRS evaluates candidates on various factors, which IRCC views as demonstrating a candidate’s ability to succeed in Canada. These elements include factors such as education, language ability, and Canadian work experience, among others.
A candidate is subject to the CRS whether or not they are single or coupled. However, the way they are scored changes somewhat depending on their status. A coupled person can receive less base points than a single person, but can also gain points from their partner.