Please post the URL of your blog/website.Right now due to covid-19 pandemic and long queue of applications, the review process it taking up to six weeks. It may take longer in some cases.As you noted that your blog/website is pending for approval for long time, So please ensure* You placed the ad codes properly* If you are using blogger,     (i) You configured the robots.txt correctly  (ii) You applied through blogger dashboard using earning tabFor more information about blogger you can see the link
https://support.google.com/adsense/thread/103342605?hl=en&msgid=103344164And for more information about the requirements of AdSense you can visit the link
https://support.google.com/adsense/thread/100125147?hl=en&msgid=100135059Thanks