Either use double quotes instead of single quotes before and after Me.Business_Name or substitute 2 single quotes within Me.Business_Name for each single quote it contains.
If DCount("Business_Name", "Food Permisestbl", "[Business_Name] = """ & Me.Business_Name.Value & """") > 0 Then
If DCount("Business_Name", "Food Permisestbl", "[Business_Name] = '" & Replace(Me.Business_Name.Value, "'", "''") & "'") > 0 Then
You might find troubleshooting easier if you use a string variable for the third Dcount argument, Criteria.
Dim strCriteria As String
' then one of these next 2 lines ...
strCriteria = "[Business_Name] = """ & Me.Business_Name.Value & """"
'strCriteria = "[Business_Name] = '" & Replace(Me.Business_Name.Value, "'", "''") & "'"
Debug.Print strCriteria '<- inspect in Immediate window; Ctrl+g will take you there
' and finally ...
If DCount("Business_Name", "Food Permisestbl", strCriteria) > 0 Then