in these repeats is possible notate repeat of 3/5 measure not only 1,2,4 ? like %4 does in popover for four measures for example. and i think dos this repeat 2 bars,group in 4 style thing mean two bars repeated four times. and is possible use custom values not only these what manual lists. like rrprsy 7 measures in 5 times.
No, Dorico only supports bar repeats for patterns of 1, 2 or 4 bars. See e.g. this earlier thread: