Hey Vinay, I don't think you could customize the TAM weekly report to include all the named accounts in your Marketo instance. By default, the weekly TAM report consists of the following -
- Named accounts sorted by the account score you choose (in your case, based on the Engagement score)
- Top engaged people
- Key trends and interesting moments for people in the named accounts
- A link to download a CSV file containing additional details of the above items.
Unfortunately, we're not able to create a subscription for the account lists, unlike the lead lists. One way you could probably explore is to add all of your named accounts to the account static list and set up a custom service that would get all the accounts in the account static list along with the Engagement score field's value and then send an email containing the named account data (of course, after filtering the JSON response) to the designated users.
Another fairly simple, but pretty much manual way is to go to TAM > Named Accounts > Export Named Accounts in a CSV (this will also include the count of people in each of the named accounts).