Question: Is it possible to get gene expression values on a cell by cell basis instead of on a cluster by cluster basis in Loupe Cell Browser?
Answer: Not in Loupe Cell Browser, but that information is available in the feature barcode matrix output of Cell Ranger.
This matrix output contains UMI counts for each gene in each cell. This data type can be loaded into R/Python for further analysis. It can also be converted to a CSV file making it easier to explore using command-line tools such grep.