The RBS score is in PECAAN, it is called "final score" in the the table at the top that lists all the start codons. That table also has the gap score. This works OK for looking for large gaps that might indicate a missing gene.

There is also a graphical map in PECAAN in the "Pham maps" tab. It is not as nice as the frames view (especially for student understanding of frames). It also does not have a way to zoom in/out so if you need specific details on a region it takes more work than using the frames map where it is easy to zoom in. Instead I typically just hover my moues over each gene to get the exact coordinates and then use mental math to get an idea of the exact gap/overlap.

There is also a view something like DNA master's 6 frame view with the DNA and all the amino aicds, that is in the Sequence tab, but you have to scroll down to see it.