Normally, all the journal issues published in a year form one volume. However, some journals group their issues into more volumes per year depending on the number of issues brought out per year. For example, Nature (weekly journal) has 12 volumes, one volume for each month. Another popular weekly journal Science has 4 volumes , each volume consisting of issues pertaining to 3 months. Note that periodicity of journal issues can be weekly, fortnightly, monthly, bi-monthly, quarterly, bi-annual, or even annual!
The journals' publishers together with the editor can establish the frequency of the journals' issues' appearance. Sometimes the number of papers sent and received by the journal exceeds the size of one volume, so it is possible to publish a second volume in the same year.
The periodicity of a journal is established by the editors of a journal, this is independent if it is indexed or not in Scopus or in WoS. One of the requirements for a magazine to be indexed in Scopus is to have at least one volume per year. Many magazines for their discipline, thematic area and public administration only one number per year, some up to twelve (one per month). You just have to find the magazine that best suits you. You can search here for all the journals that are indexed in Scopus https://www.scimagojr.com/