There needs to be a minimal amount of coins in your wallet to stake. It is a very low amount. But to simply put, the more coins you have staking, the sooner your reward will be. The larger the input, or a deposit, the sooner the stake. If you have 1 million coins staking at a time in your wallet, you make get a reward in about 3 weeks if your wallet is staking 24/7. This will change due to how many nodes are on the network and how many of those nodes are staking and the quantity of coins they are staking.
This document will explain the technical requirements in order to successfully participate in the XEP staking process.
Before you start it is vital to understand that only the XEP Desktop Wallet can perform XEP staking (the mobile wallets can’t, because they don’t have a copy of the blockchain). If you do not have a desktop wallet running, get a XEP Desktop Wallet for your operating system.