Without knowing the business or objective...overall business performance in your currently.
Stuff like: - revenue - costs - profit - break down of each section - where the money is going from profits - put these over a time series - https://www.scoro.com/blog/12-business-metrics/
Honestly, there are so many great tools out there. What's worked best for me in the past is taking advantage of free trials to really see how the tool fits into my company and with my team. I think this list (pasted below) has a lot of today's biggest contenders listed. Good luck :)
https://www.scoro.com/blog/timesheet-software-for-time-management/
This list features tools that have budget management features, in case that helps. I'm not sure if you're looking for a more DIY option or not, but some of these are super user-friendly and might be a good way to go.
https://www.scoro.com/blog/timesheet-software-for-time-management/
Congratulations for the mew role
This guide gives an excellent overview of the most imp PM tools https://www.scoro.com/blog/best-project-management-software-list/
I will add following 2 in the list https://reetro.io AI based retrospective tool https://yodiz.com PM tool
https://www.scoro.com/careers/
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They are opening London office and are building a team there. SaaS solution. Been part of it for few years - made really good money. Great team and even better product.
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Good luck!