Hi Prashant,
Thank you for reaching out. I am not quite sure what you're referring to with some of these so please let me know if I'm misinterpreting anything and provide any screenshots/other documentation that would explain what you're trying to retrieve.
- Inline_click_links: If you are referring to the number of clicks, please see here for all reports that support this metric.
- Spend: If you're referring to cost, you can see here for all reports that support this metric.
- Ad_item_number: If you are referring to the ID of the ads, you can get the Id from the Ad Performance Report
- campaign_item_number: If you're referring to the ID of the campaign, you can get the CampaignId from the Campaign Performance Report.
There is no tactic_item_number field is currently not available in the Adwords API. Can you please provide more information or share a screenshot about the field so I can see if there is something equivalent?
Regards,
Mitchell
Google Ads API Team

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