How can I see minted NFT & the access the file

Im new to the ecosystem, so sorry if its a stupid question.

I just deployed a smart contract and minted an NFT on Mumbai and I just want to see it (the token on polygon scan & the png). How can I do that? I cant seem to find any way of seeing it.

So I have the transaction hash, but is there a way of accessing the NFT?

Im not sure where to look to confirm who owns the NFT (ofc I do for now, but I dont find the field where it says this).

Any help is appreciated!

You can access your NFT even on https://testnets.opensea.io which is a testnet version of OpenSea