HELP ME WITH BITCOIN TIME STAMPS
OK, so I had several backed up .dat files on google which I put in opentimestamps

Bitcoin core stores wallet data ina file named wallet.dat so that was one of your .dat files.
Opentimestamps is just a service that provides proof that a document existed on a specific date. It doesn't store the contents of the documents.
You therefore have proof that your wallet.dat existed but that is of no use to you.

I just want the bitcoins that I know I have. I had a wallet.dat

You need to find either

that wallet.dat and any password you used to protect it
or a written copy of the &quot;private key&quot; that the wallet contained.

Otherwise all the money that was in that wallet is forever lost and unusable.