Be careful when adding custom ERC-20 tokens to your wallet. Ensure that you have properly verified that the contract address is the official/legitimate one.
It is very common for scammers to impersonate an ERC-20 token with a fake contract address in order to try to steal funds from you.
Open the Nova Wallet application.
Select the Assetsscreen and then select the manage tokens button.
Select the Add token button at the top right of the screen.
Select the appropriate network.
Input the contract address, symbol, decimals and CoinGecko link (optional).
SelectAdd token and then your token should appear on the assets page.