The below script will generate FULL BACKUP Script. After running the below command, copy the output and run the copied script to create Full Database Backup.
Declare @Path VARCHAR(100)
SEt @Path=\'C:\\DatabaseBackup\\\'
Select \'BACKUP DATABASE [\'+name+\'] TO DISK = N\'\'\'+@Path+\'\'+name+\'.bak\'\'
WITH NOFORMAT, NOINIT, NAME = N\'\'\'+name+\'-Full Database Backup\'\', SKIP, NOREWIND, NOUNLOAD, COMPRESSION, STATS = 10\'
from sys.databases
where database_id>4