You can move this to 'altcoins discussion'.
I currently have Ramp defi on my binance account. I want to switch it over to my trust wallet. I just don't know if it's an erc20 or the binance chain one or can I just choose?
Trust wallet support both, you can choose any of the two, don't you noticed both even have the same address, which is your ethereum address? Sending it should not be a problem.