Don’t have an account opened, even demo. Could someone be kind enough to check and report the daily FX swap rate to hold a 1M long EUR/USD position, if TWS gives out this info ? Thanks a lot!

Interactive Brokers publishes its rates on its public facing website. Is this what you're looking for?

I have the same question than OP. I'm not a client at the moment and would like to check the Forex swap rates (it seems they vary based on the amount invested, based on another post I read)

https://www1.interactivebrokers.com/en/index.php?f=2222&exch=ibfxpro&showcategories=FX
This link previously given doesn't seem to indicate them

Can they be retrieve on a paper trading account as accurate ? or elsewhere on the site ?

IB doesn't have FX Swap Rates for specific pairs. They are a multi-currency, multi-asset, trading account. The pay interest on all cash deposits and charge margin on all cash deficits. The effect is the same as FX Swap Rates, it's just quoted and processed in a different way.
If you Buy USD and Sell AUD, they will pay you interest on your USD deposit (currently 0%) and charge you margin on your AUD deficit (currently 1% or more depending on account size and type).
If you Buy AUD and Sell USD, it's the same. 0% interest on your AUD deposit and 1% or more margin on your USD deficit
So either way they charge you 1% - great business to be in.

Got it. I'll think with currency futures which are below 1% at the moment, and adjust the amounts below the minimum lot size of IB with Oanda for finesse. The IB FX rates are just worse than many OTC shops for larger notional values to hedge economically