How much do you have to pay currently for a Bitcoin transaction of 0.1 BTC ?
It depends on the mempool and the weight of the transaction, it is not about the amount you are sending. The fee that is needed for 0.0001 btc will also be needed for 100 btc, the amount you are sending does not matter.
To check the fee rate you can use mempool.space
To check the transaction weight, you can use
https://jlopp.github.io/bitcoin-transaction-size-calculator/