To find and a transaction ID link (txid) from your Bitcoin.com wallet, please follow the steps below:
1. Open your Bitcoin.com wallet
2. Select your BCH or BTC wallet, depending on what transaction you are looking for
3. You should now see all the sent and received transactions from the selected wallet
4. Tap/click on the transaction you need the transaction ID for
5. Scroll down and tap "View on blockchain"
6. You will see the transaction ID displayed on the block explorer along with all the details of the transaction. To copy the txid just tap/click on the copy icon next to the transaction string.