Where do I find the taxes paid by my escrow account if box 10 on my 1098 is 0? I don't have a summary page for my 1098.

That would be listed on your real estate tax invoice. You can probably look it up online if you visit the property tax appraiser's website for the city or county that you live in.

Be careful here and research this thoroughly if you purchased the property in 2020. If you purchased the property in 2020, then chances are the county was paid any property taxes due prior to your purchase of the property. In such a case, you would have reimbursed the seller for the share of property taxes that applied to you for the billing period. This amount will be on your closing statement you received at the sale closing. It most likely will be less than the amount shown on the county property appraiser's website. So if you purchased the property in 2020, you can only claim the amount shown on your closing statement, as that's the amount that "you" actually paid in 2020.