Then you should have around 100$ spent and the rest can go into things like a siphon, a couple buckets, plant fertilizer nilocg thrive is a good choice and is all in one. Some root tabs and then a betta fish. since you are a beginner I’d get a imbellis wild betta or a plakat or female betta, long finned males tend to have more health problems ime. in a 10 tankmates can include, ember tetras, Pygmy cories, shrimp (ghost shrimp being a favorite of mine) khulis perhaps or mabye something like micro rasboras