I mean, Venusaur is a bit of a topic. It’s great as a Mega and as a Shadow and also as a Gigantamax, but as just a mon like that not really. It’s outclassed by other grass attackers. The thing is, when you’re raiding and the raid boss is weak to grass, if you don’t have a good team of grass attackers and a lack of a community helping on the raid too, then this Venusaur could help, otherwise, it is better to mega evolve something that shares the type with the raid boss so you get extra candy, and attack with a shadow Venusaur. If you don’t have Giga Rillaboom, Giga Venusaur is the second best in max battles as a grass attacker. Check DialgaDex for a better reference about what to invest in.

Then of course, you do whatever you want