welcome to the forum,
try adding --file-perms=0777
check out my howto guide, tho focused on windows, the same should apply to linux
https://forum.rclone.org/t/how-to-execute-programs-inside-a-mount/12955
check out my wiki, tho focused on windows, the same should apply to linux
https://github.com/rclone/rclone/wiki/how-to-run-.exe-application-on-rclone-mount