>銀行かカジノなら1000ドル札は今もあると思います。
1000ドル札は2000年に廃止されました。
巷に出回っているものは、今でもどこかに物理的に存在はすると思いますが、現在はお店で使用するとはできません。よって古い貨幣は銀行に持って行って換金するしかなく、銀行に入った時点で廃棄されるので、銀行でも内部の人以外は目にすることはなく、カジノでも使えないので目にすることはないと思います。
https://www.cbc.ca/news/politics/bank-notes-legal-tender-1000-bill-1.4554758
The Liberal government announced Tuesday — in an item buried deep in its 367-page 2018 budget document — that some paper currency will no longer be accepted as legal tender.
While the Bank of Canada stopped printing the $1,000 note in 2000, there are still about 700,000 of those bills still in circulation across the country.
As part of a plan to crack down on counterfeiting, money laundering and tax evasion, the government will no longer allow those bills to be used to pay for goods and services. The budget does not say when those bills will cease to be legal tender.
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A Canadian can still deposit those notes at their local bank or credit union branch, which would in turn send them on to the central bank to be destroyed.