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Ok, are any of the pages ranking. If not I would look if Google can easily find these new urls from your nav / internal links. Also I would recommend checking your server logs, if Google can't / haven't crawled the pages they can't index them. Final point, if these pages are completely off topic and the rest of the site is about toothbrushes and you add pages about cars, Google might be unsure about these new pages and how authoritative you are in the niche especially if these fall into the YMYL categories. If its the last issue you would probably need to work on link building into this section of the site from authority sites within the niche.

Hi Hamid, If your site is relatively new or you've only just added your sitemap to Google Search Console then it will take a while for you'll see this number go up. What you can do though is check our your Crawl Stats in Google Search Console. There you can find out how many pages Google is currently crawling daily on your site. If this number is very low, then you need to find ways to get more authority to your pages so Google will find it worthwhile to index these pages as well. You have a limited crawl budget and if that's relatively low then it could take a while before Google will index all these pages as they just haven't found them before you submitted the sitemap. Martijn.

Thanks a lot for your attention Best Regards