I submitted my sitemap to Google Search Console 15 Feb 2021.
Only few of my pages have been indexed, however almost all my product pages have been crawled by not indexed.
This is what it says for each excluded product:
I'm not exactly sure what this means - do I request indexing of each product page one by one or do I just keep waiting?
Google has a guide for their index coverage report that will give you insight on how to interpret their reports. One thing I can add is that in the report you shared are seeing a Yes beside 'index allowed?' So we can confirm that the link isn't set to noindex and there is a likely other factors as to why Google has yet gotten around to indexing the product pages after a crawl. You can click 'Request Indexing' to ask Google to try again to index the page.
If there is anything else I can help you with, please let me know.