How can I get form 1099 of year 2019?

[jtax]

You can ask the financial institution to send you a copy. Often you will find it in the "tax center" of your account on their website.

If none of that works you can get a "wage & income" transcript from the IRS. It will only show what the IRS has received and processed.

https://www.irs.gov/individuals/get-transcript