Evangelical Protestants (Baptists, Evangelical Free, Evangelical Covenant, Christian church, Church of Christ, Disciples of Christ, Christian and MIssionary Alliance, Assemblies of God, etc.) do not have a “Mass.” They have a “worship service.”
Although evangelical denominations will sometimes celebrate the “ordinance” of communion in a worship service, they do not practice “sacraments,” and they do not believe in transubstantiation or the True Presence of Jesus in the Blessed Sacrament.
The purpose of a worship service is to worship God through music, prayer, giving offerings, and listening to preaching. The main focus of the worship service is the Bible, the Word of God, and believers hear the Word through music (congregational, choral, solo, and instrumental), and through speech (lay people and ordained ministers).
Some worship services are quite lively, with contemporary music of various styles (gospel, rock, jazz, soul, country, praise, ethnic, etc.) and gripping, dramatic preaching.
Other worship services are more quiet, with traditional music of various styles (traditional hymns, classical), and highly-intellectual (lecture) style preaching. (This is the kind of evangelical church that I grew up in.)
Most of the time, evangelical Protestant worship services last at least an hour and a half, and at least 30-45 minutes is devoted to the preaching (sermon or “message”). In many evangelical worship services, at least 20 minutes is devoted to Praise and Worship, during which many different songs and choruses are sung by the congregation and a worship leader or worship team, usually accompanied by either a Praise and Worship band, an orchestra (chamber orchestra in most churches), piano, or a soundtrack. Organ is seldom or never used in these services.
Most evangelical Protestant churches will offer two or three options for their worship services: 1) Traditional 2) Contemporary 3) Alternative. Many of the alternative worship services offer “Catholic” practices such as candles, chant, Latin, lectio divina, centering prayer, and silence. Some even offer “confession.”
Worship service are different each week in most evangelical churches. There is no liturgy, although there is often an “order of worship” that is followed each week. But many evangelical churches have done away with an “order of worship” and do not hand out a church bulletin anymore, as they want their worship services to seem less ritualistic. Many evangelical denominations reject “ritual” as “mindless repetition,” and seek to follow the Holy Spirit’s leading in every worship service. This means that some weeks, you might attend a worship service that consists of all music and no speaking, or you might see a play instead of a sermon, or you might see all testimonies from the lay-people, or you might see a service of all prayer with no music or preaching. It’s different every week.
I hope this information is helpful to you.