Find NFT Token ID
On Opensea
On the NFT Detail page, find the category Details. Then, click on the Token ID number to copy it
On Blockchain Explorer (Etherscan, PolygonScan...)
Visit the Blockchain Explorer where you hold your NFT:
Search after your address, click on ERC1155 Tokens Txns Tab and copy the Token ID.
caution
The Token ID can be as long as 256 characters, make sure you copy the all number.