There are two ways you can get it done, first my using any SEO audit tool which can give you full report of your website. These tools can be free or paid depending upon the features and factors they are taking into consideration while creating a SEO report. For basic audits there are some free tool which can give you basic reporting of your website SEO score.

Second, You can also hire SEO professionals who can do the job for you and also help you out for optimizing those factors. It totally depends upon your work process and budget, how you want to proceed.