The definition of salvation , according to Strong's concordance means "a deliverance"
there is a one time eternal deliverance that happened on the cross by Jesus remitting the sins of those that his Father gave him.
There will never be any other eternal deliverance's given as Jesus stated, while on the cross, "it is finished" meaning that the purpose of God sending him to earth as a man was finished on the cross.
If the scriptures are interpreted right, there are many deliverance's (salvation's) for his elect, as they sojourn here in earth, by their good works
Eternal deliverance is given by God's grace. The other deliverance's are earned by the good works of God's born again elect.
Our salvation from sin would be incomplete if we were only saved from the penalty of our sin while we continued to live in sin, so there must also be an aspect of our salvation that we are experiencing in the present by Jesus leading us to obey God's law. In Titus 2:11-13, our salvation is described as being trained by grace to do what is godly, righteous, and good, and to renounce doing what is ungodly, so it is not the case that we are required to have first done those works in order to earn our salvation as the result and it is not the case that we are required to do those works as the result of having first been saved, but rather God graciously teaching us to experience being doers of those works is itself part of the content of His gift of salvation. Moreover, in Titus 2:14, it does not just say that Jesus gave himself to redeem us from all lawlessness, but also to purify for himself a people of his own possession who are zealous for doing good works.
The content of a gift can itself be the experience of doing something, such as giving someone the opportunity to experience driving a Ferrari for an hour, where the gift requires them to do the work of driving it in order to have that experience, but where being required to do that work does not detract from the fact that the opportunity to drive it was completely given as a free gift. Likewise, the content of God's gift of eternal life is the experience of knowing Him and Jesus (John 17:3) and the gift of God's law is His instructions for how to have that experience (Exodus 33:13, Matthew 7:23), not for how to earn eternal life as a wage.