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Checked MetaMask many times. Tried connecting to open sea but still can’t see anything

0x3B2F5B68BF21fa4f136430667950eE9BfCcb7CEe is the wallet address. And nothing. No transaction history.
I’m newbie to this nft thing. Maybe need instructions how to use MetaMask to connect to the “token” of said nft

Tried to use polyscan (for polygon/matic) but don’t know what I’m looking at