I think what OP is asking is how to
see the fee of an incoming transaction, so as to get a rough idea of how long it will take to confirm. The answer to that question depends on the client or wallet software you are using, so if you can answer that question then we can give more detailed instructions.
Alternatively, if you know how to find the transaction hash or transaction ID of the incoming transaction, you can paste it in to a block explorer such as
https://blockchair.com and look at the field "Fee per vbyte".