Hi @sameet uuu
Maybe I don't understand your wording... "shared database in network."
If you install an SQL Server Express somewhere in your network, you can share all hosted databases with all users in your network... there is no limitation based on the number of users, only in size and compute power.
If you are using SQL Server with database files located on a network drive... that is supported and can be enabled:
https://learn.microsoft.com/en-us/troubleshoot/sql/admin/support-network-database-files
There is also no limitation based on any numbers...
Or if I misunderstood your question, please explain a little more. Thx