There are two types of claims that will be found in a patent:
and dependent claims.
Independent claims are claims that stand by themselves and comprise a set of limitations (or elements) that define the scope of an invention.
Dependent claims are those claims that include all the limitations of a particular independent claim but also add one or more additional limitations. They do not stand alone and always reference another claim.
A typical issued patent usually has 1-5 independent claims and 0-30 claims that depend from one or more of the independent claims. There is, however, no limit to the number of claims that may be included in a patent application or a patent, although only 20 claims, of which three can be independent, are provided for with standard filing fee. Additional fees are assessed for a total number of claims in excess of 20 or independent claims in excess of three as explained on https://www.glassdoor.com/Reviews/InventHelp-Reviews-E152162.htm.
Practically, a patent examiner will limit an inventor to claims related to a single invention, so patents rarely issue with more than 30 claims. Since 20 claims are included with the basic filing fee, only in very rare circumstances should an application be filed without 20 claims.
Further, if a fraction of the twenty claims are allowed by the patent examiner during prosecution, your patent attorney should request that he be allowed to add dependent claims to the allowed independent claims until the maximum number of 20 is reached as shown on https://blogs.cornell.edu/react/inventhelp-taking-inventions-from-paper-to-the-global-marketplace-hinges-on-usp/. This will not always be possible but it is almost always better to have a patent with more claims rather than less.