Quote from: BitDUMMY on Today at 04:55:54 PM

I didn't find where I can get SEED phrase in Bitcoin.

Yes, core doent support seed phrase after all.

Quote from: BitDUMMY on Today at 04:55:54 PM

For now, I just dumped private key in text... what should I do next?

Follow my above post. Quote it for you.

Quote from: bL4nkcode on Today at 04:23:35 PM

[...] and import the private key to supported wallet of BCH like coinomi or Electron Cash. But make sure you transfer your bitcoin first to your new wallet for security reasons and save all necessary backups offline of that new wallet.

Getting fork coins.
Here's another tutorial (by bitmover) for using coinomi wallet. Skip step 3 since you will get your private key on core (steps below), on step 4 just paste your private key on coinomi.

Anyways, you can pm loyce and he can help you anything with that.