The ex-Kilmarnock keeper made his first appearance as a trialist for Ally McCoist's side in the 5-0 win over East Fife at the weekend after enduring a frustrating start to life at Ibrox.
While Bell has had to wait for his chance to shine, Gallacher has more than held his own in the first team and the 26-year-old has been impressed with a series of top showings from his Gers understudy.
"Every game I watch, whether I'm at the match or I'm watching one on TV, I watch the keeper's performances," Bell said.
"I always try to pick things up and bring them into my own game to improve it if I can and Scott has done really well.
"I've said before that he's a fantastic goalie and I've looked at his games. Hopefully I've picked things up from watching him."
Bell appeared in a number of friendly clashes before finally making his competitive bow at the weekend and the keeper was delighted to finally take to the field in league action.
"It was fantastic to get out on the pitch," he told RangersTV.
"It has been a long time coming and it was great to get involved.
"It was nice to have my team score five goals rather than let five in at Ibrox and it was brilliant. It's something I've always dreamed of.
"There were a few shots from 25 yards that East Fife managed to get in and we weren't too happy about that.
"It was good to get a couple of saves under my belt and I'm delighted to keep a clean sheet."